The Project Gutenberg eBook, Creation or Evolution?, by George Ticknor Curtis
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CREATION
OR EVOLUTION?
A PHILOSOPHICAL INQUIRY.
BY
GEORGE TICKNOR CURTIS.
NEW YORK:
D. APPLETON AND COMPANY,
1, 3, AND 5 BOND STREET.
1887.
Copyright, 1887.
By GEORGE TICKNOR CURTIS.
TO
LEWIS A. SAYRE, M. D.,
WHOSE PROFESSIONAL EMINENCE IS RECOGNIZED
IN BOTH HEMISPHERES,
WHOSE SKILL AS A SURGEON
SUFFERING HUMANITY GRATEFULLY ACKNOWLEDGES,
TO WHOSE ANATOMICAL LEARNING
THE AUTHOR IS LARGELY INDEBTED,
AND OF WHOSE FRIENDSHIP HE IS PROUD,
This Book
IS AFFECTIONATELY INSCRIBED.
"Dost thou not know, my new astronomer!
Earth, turning from the sun, brings night to man?
Man, turning from his God, brings endless night;
Where thou canst read no morals, find no friend,
Amend no manners, and expect no peace."
YOUNG'S NIGHT THOUGHTS.
[PREFACE.]
Perhaps it is expected of a writer who steps out of the sphere of his ordinary pursuits, and deals with such a subject as that which is treated in this work, that he will account for his so doing. It is not necessary for me to say that no class of men can have a monopoly in any subject. But I am quite willing to take my readers into my confidence so far as to state how I came to write this book.
Most men, who have a special pursuit, find the necessity for recreation of some kind. Some take it in one way, and some in another. It has been my habit through life to seek occasional relief from the monotony of professional vocations in intellectual pursuits of another character. Having this habit—which I have found by experience has no tendency to lessen one's capacity for the duties of a profession, or one's relish of its occupations—I some years ago took up the study of the modern doctrine of animal evolution. Until after the death of the late Mr. Charles Darwin, I had not given a very close attention to this subject. The honors paid to his memory, and due to his indefatigable research and extensive knowledge, led me to examine his "Descent of Man" and his "Origin of Species," both of which I studied with care, and I trust with candor. I was next induced to examine the writings of Mr. Herbert Spencer on the subject of evolution, with which I had also been previously unacquainted except in a general way. I was a good deal surprised at the extent of Mr. Spencer's reputation as a thinker, and by the currency which his peculiar philosophy has had in this country, where it has led, among the young and inexperienced, as well as among older persons, to very incorrect habits of reasoning on subjects of the highest importance. The result of my studies of these writers is the present book. I have written it because I have seen, or believe that I have seen, where the conflict arises between some of the deductions of modern science and the principles which ought to regulate not only religious belief, but belief in anything that is not open to the direct observation of our senses. But I trust that I shall not be understood as having written for the purpose of specially defending the foundations of religious belief. This is no official duty of mine. How theologians manage, or ought to manage, the argument which is to convince men of the existence and methods of God, it is not for me to say. But a careful examination of the new philosophy has convinced me that those who are the special teachers of religious truth have need of great caution in the admissions or concessions which they make, when they undertake to reconcile some of the conclusions of modern scientists with belief in a Creator. I do not here speak of the Biblical account of the creation, but I speak of that belief in a Creator which is to be deduced from the phenomena of nature. While there are naturalists, scientists, and philosophers at the present day, whose speculations do not exclude the idea of a Supreme Being, there are others whose theories are entirely inconsistent with a belief in a personal God, the Creator and Governor of the universe. Moreover, although there are great differences in this respect between the different persons who accept evolution in some form, the whole doctrine of the development of distinct species out of other species makes demands upon our credulity which are irreconcilable with the principles of belief by which we regulate, or ought to regulate, our acceptance of any new matter of belief. The principles of belief which we apply in the ordinary affairs of life are those which should be applied to scientific or philosophical theories; and inasmuch as the judicial method of reasoning upon facts is at once the most satisfactory and the most in accordance with common sense, I have here undertaken to apply it to the evidence which is supposed to establish the hypothesis of animal evolution, in contrast with the hypothesis of special creations.
I am no ecclesiastic. I advance no arguments in favor of one or another interpretation of the Scriptures about which there is controversy among Christians. While I firmly believe that God exists, and that he has made a revelation to mankind, whereby he has given us direct assurance of immortality, I do not know that this belief disqualifies me from judging, upon proper principles of evidence, of the soundness of a theory which denies that he specially created either the body or the mind of man. How far the hypothesis of evolution, by destroying our belief that God specially created us, tends to negative any purpose for which we can suppose him to have made to us a revelation of our immortality, it is for the theologian to consider. For myself, I am not conscious that in examining the theory of evolution I have been influenced by my belief in what is called revealed religion. I have, at all events, studiously excluded from the argument all that has been inculcated by the Hebrew or the Christian records as authorized or inspired teachings, and have treated the Mosaic account of the creation like any other hypothesis of the origin of man and the other animals. The result of my study of the hypothesis of evolution is, that it is an ingenious but delusive mode of accounting for the existence of either the body or the mind of man; and that it employs a kind of reasoning which no person of sound judgment would apply to anything that might affect his welfare, his happiness, his estate, or his conduct in the practical affairs of life.
He who would truly know what the doctrine of evolution is, and to what it leads, must literally begin at the beginning. He must free his mind from the cant of agnosticism and from the cant of belief. He must refuse to accept dogmas on the authority of any one, be they the dogmas of the scientist, or of the theologian. He must learn that his mental nature is placed under certain laws, as surely as his corporeal structure; and he must cheerfully obey the necessities which compel him to accept some conclusions and to reject others. Keeping his reasoning powers in a well-balanced condition, he must prove all things, holding fast to that which is in conformity with sound deduction, and to that alone. But all persons may not be able to afford the time to pursue truth in this way, or may not have the facilities for the requisite research. It seemed to me, therefore, that an effort to do for them what they can not do for themselves would be acceptable to a great many people.
It may be objected that the imaginary philosopher whom I have introduced in some of my chapters under the name of Sophereus, or the searcher after wisdom, debating the doctrines of evolution with a supposed disciple of that school, whom I have named Kosmicos, is an impossible person. It may perhaps be said that the conception of a man absolutely free from all dogmatic religious teaching, from all bias to any kind of belief, and yet having as much knowledge of various systems of belief as I have imputed to this imaginary person, would in modern society be the conception of an unattainable character. My answer to this criticism would be that I felt myself at liberty to imagine any kind of character that would suit my purpose. How successfully I have carried out the idea of a man in mature life entirely free from all preconceived opinions, and forming his beliefs upon principles of pure reason, it is for my readers to judge. With regard to the other interlocutor in the dialogues, I hope it is not necessary for me to say that I do not impute all of his opinions or arguments to the professors of the evolution school, or to any section of it. He is a representative of the effects of some of their teachings, but not an individual portrait. But as, for the purposes of the antagonism, it was expedient to put into the mouth of this person whatever can be said in favor of the hypothesis of evolution, it became necessary to make him represent the dogmatic side of the theory; and thus to make the collision and contrast between the minds of the two debaters as strong as I could. Controversial discussion in the form of debate has been used from the time of Plato. While I have adopted a method, I have not presumed to imitate its great exemplars. But for the value of that method I shall presently cite weighty testimony. It was a relief to me to resort to it after having pursued the subject in the more usual form of discussion; and indeed it forced itself upon me as a kind of necessity, because it seemed the fairest way of presenting what could be said on both sides of the question. I hope it may have the good fortune to keep alive the interest of the reader, after he has perused the previous chapters.
One disadvantage of all positive writing or discourse is that there is no one to confute, to contradict, or to maintain the negative. At the bar, and in some public assemblies, there is an antagonist; and truth is elicited by the collision. But in didactic writing, especially on a philosophical topic, it is best to introduce an antagonist, and to make him speak in his own person. Two of the best thinkers of our time have forcibly stated the advantage—the necessity, in short—of personal debate. Mr. John Stuart Mill, in his essay on Liberty, observes that—
"The loss of so important an aid to the intelligent and living apprehension of a truth as is afforded by the necessity of explaining it to or defending it against opponents, though not sufficient to outweigh, is no trifling drawback from the benefits of its universal recognition. Where this advantage can not be had, I confess I should like to see the teachers of mankind endeavoring to provide a substitute for it; some contrivance for making the difficulties of the question as present to the learner's consciousness as if they were pressed upon him by a dissentient champion eager for his conversion.
"But instead of seeking contrivances for this purpose, they have lost those they formerly had. The Socratic dialectics, so magnificently exemplified in the dialogues of Plato, were a contrivance of this description. They were essentially a discussion of the great questions of life and philosophy, directed with consummate skill to the purpose of convincing any one, who had merely adopted the commonplaces of received opinion, that he did not understand the subject—that he as yet attached no definite meaning to the doctrines he professed, in order that, becoming aware of his ignorance, he might be put in the way to attain a stable belief, resting on a clear apprehension both of the meaning of doctrines and of their evidence. The school disputations of the middle ages had a similar object. They were intended to make sure that the pupil understood his own opinion, and (by necessary correlation) the opinion opposed to it, and could enforce the grounds of one and confute those of the other. The last-mentioned contests had, indeed, the incurable defect that the premises appealed to were taken from authority, not from reason; and as a discipline to the mind they were in every respect inferior to the powerful dialectics which formed the intellects of the 'Socratici viri.' But the modern mind owes far more to both than it is generally willing to admit; and the present modes of instruction contain nothing which in the smallest degree supplies the place either of the one or of the other.... It is the fashion of the present time to disparage negative logic—that which points out weakness in theory or errors in practice, without establishing positive truths. Such negative criticism would indeed be poor enough as an ultimate result, but as a means to attaining any positive knowledge or conviction worthy the name, it can not be valued too highly; and until people are again systematically trained to it there will be few great thinkers, and a low general average of intellect in any but the mathematical and physical departments of speculation. On any other subject no one's opinions deserve the name of knowledge, except so far as he has either had forced upon him by others, or gone through of himself, the same mental process which would have been required of him in carrying on an active controversy with opponents."
Mr. Grote, in his admirable work on "Plato and the other Companions of Socrates," has the following passage:
"Plato is usually extolled by his admirers as the champion of the Absolute—of unchangeable forms, immutable truth, objective necessity, cogent and binding on every one. He is praised for having refuted Protagoras, who can find no standard beyond the individual recognition and belief of his own mind or that of some one else. There is no doubt that Plato often talks in that strain, but the method followed in his dialogues, and the general principles of methods which he lays down here as well as elsewhere, point to a directly opposite conclusion. Of this the Phædrus is a signal instance. Instead of the extreme of generality, it proclaims the extreme of speciality. The objection which the Socrates of the Phædrus advances against the didactic efficacy of written discourse is founded on the fact that it is the same to all readers—that it takes no cognizance of the differences of individual minds nor of the same mind at different times. Socrates claims for dialectic debate the valuable privilege that it is constant action and reaction between two individual minds—an appeal by the inherent force and actual condition of each to the like elements in the other—an ever-shifting presentation of the same topics, accommodated to the measure of intelligence and cast of emotion in the talkers and at the moment. The individuality of each mind—both questioner and respondent—is here kept in view as the governing condition of the process. No two minds can be approached by the same road or by the same interrogation. The questioner can not advance a step except by the admission of the respondent. Every respondent is the measure to himself. He answers suitably to his own belief; he defends by his own suggestions; he yields to the pressure of contradiction and inconsistency when he feels them, and not before. Each dialogist is (to use the Protagorean phrase) the measure to himself of truth and falsehood, according as he himself believes it. Assent or dissent, whichever it may be, springs only from the free working of the individual mind in its actual condition then and there. It is to the individual mind alone that appeal is made, and this is what Protagoras asks for.
"We thus find, in Plato's philosophical character, two extreme opposite tendencies and opposite poles co-existent. We must recognize them both, but they can never be reconciled; sometimes he obeys and follows the one, sometimes the other.
"If it had been Plato's purpose to proclaim and impose upon every one something which he called 'Absolute Truth,' one and the same alike imperative upon all, he would best proclaim it by preaching or writing. To modify this 'Absolute,' according to the varieties of the persons addressed, would divest it of its intrinsic attribute and excellence. If you pretend to deal with an Absolute, you must turn away your eyes from all diversity of apprehending intellects and believing subjects."
With such testimony to the value of dialectic debate, I hope that my adoption of it as a method will be regarded as something better than an affectation.
Mr. Spencer, in one of his works,[1] referring to and quoting from Berkeley's "Dialogues of Hylas and Philolaus," observes that "imaginary conversation affords great facilities for gaining a victory. When you can put into an adversary's mouth just such replies as suit your purpose, there is little difficulty in reaching the desired conclusion." I have not written to gain a victory; and, indeed, I am quite aware that it would be impossible to gain one over those with whom I can have no common ground of reasoning. In the imaginary conversations in this work, I have taken great care not to put into the mouth of the supposed representative of the doctrine of evolution anything that would suit my own purpose; and, in every instance in which I have represented him as relying on the authority of Mr. Darwin or of Mr. Spencer, I have either made him quote the words or have made him state the positions as I suppose they must be understood, and have referred the reader to the proper page in the works of those writers.
And here I will render all honor to the admirable candor with which Mr. Darwin discussed objections to his theory which have been propounded by others, and suggested further difficulties himself. If I do not pay the same tribute to Mr. Spencer, the reason will be found in those portions of my work in which I have had occasion to call in question his methods of reasoning.
Some repetition of facts and arguments will be found in the following pages in the different aspects in which the subject is treated. This has been intentional. When the tribunal that is addressed is a limited and special one, and is composed of a high order of minds accustomed to deal with such a science, for example, as jurisprudence, he who undertakes to produce conviction can afford to use condensation. He seldom has to repeat what he has once said; and often, the more compact his argument, the more likely it will be to command assent if it is clear as well as close. But this work is not addressed to such a tribunal. It is written for various classes of readers, some of whom have already a special acquaintance with the subject, some of whom have less, and some of whom have now none at all. It is designed to explain what the theory of evolution is, and to encounter it in the mode best adapted to reach the various minds of which the mass of readers is composed. If I had written only for scientists and philosophers, I should not have repeated anything.
For similar reasons I have added to this volume both a general index and a glossary of the scientific and technical terms which I have had occasion to use.
The whole of the text of this work had been written and electrotyped before I had an opportunity to see the very interesting "Life and Correspondence" of the illustrious naturalist, the late Louis Agassiz, edited by his accomplished widow, Mrs. Elizabeth Cary Agassiz, and published in October, 1885, by Houghton, Mifflin and Company, Boston. For a long period of years, after his residence in this country began, and until my removal from Boston to New York in 1862, I enjoyed as much of his intimacy as would be likely to subsist between persons of such different pursuits. I believe that I understood his general views of creation, from his lectures and conversation. It is now made entirely certain that he never accepted the doctrine of evolution of distinct types out of preceding and different types by ordinary generation; and it has been to me an inexpressible satisfaction to find that the opinions and reasoning contained in my work, and adopted independently of any influence of his, are confirmed by what has now been given to the world. I need only refer to his letter to Prof. Sedgwick, written in June, 1845, and to his latest utterance, the paper on "Evolution and Permanence of Type," in the thirty-third volume of the "Atlantic Monthly," published after his lamented death in 1873, for proof that his opinions on the Darwinian theory never changed. Of all the scientists whom I have ever known, or whose writings I have read, Agassiz always seemed to me the broadest as well as the most exact and logical reasoner.
New York, September, 1886.
[CONTENTS.]
| [CHAPTER I]. | ||
| PAGE | ||
| Nature and importance of the subject—Is there a relation of Creatorand creature between God and man?—Rules of rational belief—Isnatural theology a progressive science? | 1 | |
| [CHAPTER II]. | ||
| The Platonic Kosmos compared with the Darwinian theory of evolution | 44 | |
| [CHAPTER III]. | ||
| The Darwinian pedigree of man—The evolution of organisms out ofother organisms, according to the theory of Darwin | 87 | |
| [CHAPTER IV]. | ||
| The doctrine of evolution according to Herbert Spencer | 131 | |
| [CHAPTER V]. | ||
| The doctrine of evolution according to Herbert Spencer further considered | 167 | |
| [CHAPTER VI]. | ||
| The doctrine of evolution according to Herbert Spencer further considered | 200 | |
| [CHAPTER VII]. | ||
| Mr. Spencer's agnosticism—His theory of the origin of religious beliefs—Themode in which mankind are to lose the consciousness of apersonal God | 257 | |
| [CHAPTER VIII]. | ||
| The existence, attributes, and methods of God deducible from the phenomenaof Nature—Origin of the solar system | 300 | |
| [CHAPTER IX]. | ||
| Does evolution account for the phenomena of society and of nature?—Necessityfor a conception of a personal actor—Mr. Spencer'sprotoplasmic origin of all organic life—The Mosaic account ofcreation treated as a hypothesis which may be scientifically contrastedwith evolution | 334 | |
| [CHAPTER X]. | ||
| "Species," "races," and "varieties"—Sexual division—Causation | 372 | |
| [CHAPTER XI]. | ||
| Origin of the human mind—Mr. Spencer's theory of the compositionof mind—His system of morality | 394 | |
| [CHAPTER XII]. | ||
| Mr. Spencer's philosophy as a whole—His psychology, and his systemof ethics—The sacred origin of moral injunctions, and the secularizationof morals | 434 | |
| [CHAPTER XIII]. | ||
| Sophereus discourses on the nature and origin of the human mind | 467 | |
| [Glossary] | 547 | |
| [Index] | 557 |
CREATION OR EVOLUTION?
[CHAPTER I.]
Nature and importance of the subject—Is there a relation of Creator and creature between God and man?—Rules of rational belief—Is natural theology a progressive science?
Man finds himself in the universe a conscious and thinking being. He has to account to himself for his own existence. He is impelled to this by an irresistible propensity, which is constantly leading him to look both inward and outward for an answer to the questions: What am I? How came I to be? What is the limit of my existence? Is there any other being in the universe between whom and myself there exists the relation of Creator and creature?
The whole history of the human mind, so far as we have any reliable history, is marked by this perpetual effort to find a First Cause.
However wild and fantastic may be the idea which the savage conceives of a being stronger and wiser than himself; however groveling and sensual may be his conception of the form, or attributes, or action of that being, he is, when he strives after the comprehension of his deity, engaged in the same intellectual effort that is made by the most civilized and cultivated of mankind, when, speculating upon the origin of the human soul, or its relation to the universe, or the genesis of the material world, they reach the sublime conception of an infinite God, the creator of all other spiritual existences and of all the forms of animal life, or when they end in the theory that there is no God, or in that other theory which supposes that what we call the creation, man included, is an evolution out of primordial matter, which has been operated upon by certain fixed laws, without any special interposition of a creating power, exerted in the production of the forms of animal life that now inhabit this earth, or ever have inhabited it. In the investigation of these contrasted theories, it is necessary to remember that the faculties of the human mind are essentially the same in all conditions of civilization or barbarism; that they differ only in the degree of their growth, activity, and power of reasoning, and therefore that there must be a common standard to which to refer all beliefs. The sole standard to which we can refer a belief in anything is its rationality, or a comparison between that which is believed and that which is most probable, according to the power of human reason to weigh probabilities. In the untutored and uncultivated savage, this power, although it exists, is still very feeble; partly because it is exercised upon only a few objects, and partly because the individual has comparatively but little opportunity to know all the elements which should be taken into account in determining a question of moral probabilities.
In the educated and cultivated man this power of judging probabilities, of testing beliefs by their rationality, is carried, or is capable of being carried, to the highest point of development, so as to comprehend in the calculation the full elements of the question, or at least to reduce the danger of some fatal omission to the minimum. It is, of course, true that the limited range of our faculties may prevent a full view of all the elements of any question of probability, even when our faculties have attained the highest point of development experienced by the age in which we happen to live. This renders the rationality of any hypothesis less than an absolutely certain test of truth. But this rationality is all that we have to apply to any question of belief; and if we attend carefully to the fact that moral probabilities constitute the groundwork of all our beliefs, and note the mental processes by which we reach conclusions upon any question depending upon evidence, we shall find reason to regard this power of testing beliefs by a conformity between the hypotheses and that which is most probable to be the most glorious attribute of the human understanding, as it is unquestionably the safest guide to which we can trust ourselves.
It may be that, while philosophers will not object to my definition of rationality, churchmen will ask what place I propose to assign to authority in the formation of beliefs. I answer, in the first place, that I am seeking to make myself understood by plain but reflecting and reasoning people. Such persons will perceive that what I mean by the rationality of a belief in any hypothesis is its fitness to be accepted and acted upon because it has in its favor the strongest probabilities of the case, so far as we can grasp those probabilities. I know of no other foundation for a belief in anything; for belief is the acceptance by the mind of some proposition, statement, or supposed fact, the truth of which depends upon evidence addressed to our senses, or to our intellectual perceptions, or to both. In the next place, in regard to the influence of authority over our beliefs, it is to be observed that the existence of the authority is a question to be determined by evidence, and this question, therefore, of itself involves an application of the test of rationality, or conformity with what is probable. But, assuming that the authority is satisfactorily established, it is not safe to leave all minds to the teaching of that authority, without the aid of the reasoning, which, independent of all authority, would conduct to the same conclusion. There are many minds to whom it is useless to say, You are commanded to believe. The question instantly arises, Commanded by whom, or what? And if the answer is, By the Church, or by the Bible, and the matter is left to rest upon that statement, there is great danger of unbelief. It is apparent that a large amount of what is called infidelity, or unbelief, now prevailing in the world, is due to the fact that men are told that they are commanded to believe, as if they were to be passive recipients of what is asserted, and because so little is addressed to their understandings.
I do not wish to be understood as maintaining that there is no place for authority in matters of what is called religious belief. I am quite sensible that there may be such a thing as authority even in regard to our beliefs; that it is quite within the range of possibilities that there should be such a relation between the human soul and an infinite Creator as to require the creature to accept by faith whatever a proved revelation requires that intelligent creature to believe. But, in view of the fact that what is specially called revealed religion is addressed to an intelligent creature, to whom the revelation itself must be proved by some evidence that will satisfy the mind, there is an evident necessity for treating the rationality of a belief in God as an independent question. In some way, by some process, we must reach a belief in the existence of a being before we can consider the claims of a message which that being is supposed to have sent to us. What we have to work with, before we can approach the teaching of what is called revealed religion, is the mind of man and the material universe. Do these furnish us with the rational basis for a belief in God?
And here I shall be expected to say what I mean by a belief in God. I have neither so little reverence for what I myself believe in, nor so little respect for my readers, as to offer them anything but the common conception of God. All that is necessary for me to do, in order to put my own mind in contact with that of the reader, is to express my conception of God just as it would be expressed by any one who is accustomed to think of the being called God by the Christian, the Jew, the Mohammedan, or by some other branches of the human race. These different divisions of mankind may differ in regard to some of the attributes of the Deity, or his dealings with men, or the history or course of his government of the world. But what is common to them all is a belief in God as the Supreme Being, who is self-existing and eternal, by whose will all things and all other beings were created, who is infinite in power and wisdom and in goodness and benevolence. As an intellectual conception, this idea of a Supreme Being, one only God, who never had a beginning and can have no end, and who is the creator of all other beings, excludes, of course, the polytheism of the ancient civilized nations, or that of the present barbarous tribes; and it especially excludes the idea of what the Greeks called Destiny, which was a power that governed the gods as well as the human race, and was anterior and superior to Jove himself. The simple conception of the one God held by the Christian, the Jew, or the Mohammedan, as the First Cause of the universe and all that it embraces, creating all things and all other beings by his will, in contrast with the modern idea that they came into existence without the volition of a conscious and intelligent being making special creations, is what I present to the mind of the reader.
This idea of God as a matter of belief presents, I repeat, a question of moral probabilities. The existence of the universe has to be accounted for somehow. We can not shut out this inquiry from our thoughts. The human being who never speculates, never thinks, upon the origin of his own soul, or upon the genesis of this wondrous frame of things external to himself, or upon his relations to some superior being, is a very rare animal. If he is much more than an animal, he will have some idea of these things; and the theories by which some of the most cultivated and acute intellects of our race, from the widest range of accumulated physical facts and phenomena yet gathered, have undertaken to account for the existence of species without referring them to the volition of an infinite creator, are at once a proof of the universal pressure of the question of creation upon the human mind, and of the logical necessity for treating it as a question dependent upon evidence and probability.
I lay out of consideration, now, the longing of the human mind to find a personal God and Creator. This sentiment, this yearning for an infinite father, this feeling of loneliness in the universe without the idea of God, is certainly an important moral factor in the question of probability; but I omit it now from the number of proofs, because it is a sentiment, and because I wish to subject the belief in God as the Creator to the cold intellectual process by which we may discover a conformity between that hypothesis and the phenomena of Nature as a test of the probable truth. If such a conformity can be satisfactorily shown, and if the result of the process as conducted can fairly claim to be that the existence of God the Creator has by far the highest degree of probability above and beyond all other hypotheses that have been resorted to to account for our existence, the satisfaction of a moral feeling of the human heart may well become a source of happiness, a consolation in all the evils of this life, and a support in the hour of death.
But in this preliminary chapter I ought to state what I understand to be the scientific hypothesis or hypotheses with which I propose to contrast the idea of God as the creator of species by applying the test of probability. To discuss the superior claims of one hypothesis over another, without showing that there is a real conflict between them, would be to set up a man of straw for the sake of knocking it down as if it were a living and real antagonist. What I desire to do is not to aim at a cheap victory by attacking something that does not call for opposition; but it is to ascertain first whether there is now current any explanation or hypothesis concerning the origin of the creation, or anything that it contains, which rejects the idea of God as the creator of that which we know to exist and as it exists, and then to ascertain which of the two hypotheses ought to be accepted as the truth, because it has in its favor the highest attainable amount of probability. There is an amount of probability which becomes to us a moral demonstration, because our minds are so constituted that conviction depends upon the completeness with which the evidence in favor of one hypothesis excludes the other from the category of rational beliefs.
I pass by the common sort of infidelity which rejects the idea of an intelligent creator acting in any manner whatever, whether by special creations or by laws of development operating on some primordial form of animal life. But among the modern scientists who have propounded explanations of the origin of species, I distinguish those who do not, as I understand, deny that there was an intelligent Creator by whose will some form of animal life was originally called into being, but who maintain that the diversified forms of animal life which we now see were not brought into being by the special will of the Creator as we now know them, but that they were evolved, by a process called natural selection, out of some lower type of animated organism. Of this class, the late Mr. Darwin is a representative. There is, however, at least one philosopher who carries the doctrine of evolution much farther, and who, if I rightly understand him, rejects any act of creation, even of the lowest and simplest type of animal existence. This is Mr. Herbert Spencer—a writer who, while he concurs in Mr. Darwin's general theory of natural selection as the process by which distinct organisms have been evolved out of other organisms, does not admit of any primal organism as the origin of the whole series of animals and as the creation of an intelligent will.
It will be appropriate hereafter to refer to the doctrine of evolution as a means of accounting for the existence of the human mind. At present it is only necessary to say that I understand it to be maintained as the hypothesis which has the highest attainable amount of evidence in its favor, that distinct species of animals are not a creation but a growth; and also that the mind of man is not a special creation of a spiritual existence, but a result of a long process by which organized matter has slowly worked itself from matter into intellect. Wherever, for instance, these scientists may place the non-human primate, out of which man has been evolved by what is called natural selection, and whether they do or do not assume that he was a creation of an intelligent will, they do not, as I understand, claim that the primate was endowed with what we call intellect; so that at some time there was a low form of animal life without intellect, but intellect became evolved in the long course of countless ages, by the process of natural selection, through the improving conditions and better organization of that low animal which had no intellect. In other words, we have what the scientist calls the non-human primate, a low form of animal without intellect, but capable of so improving its own physical organization as to create for itself and within itself that essence which we recognize as the human mind. Here, then, there is certainly a theory, an hypothesis, which may be and must be contrasted with the idea that the mind of man is a spiritual essence created by the volition of some other being having the power to create such existences, and put into a temporary union with a physical organization, by the establishment of a mysterious connection which makes the body the instrument of the soul so long as the connection exists. If I have stated correctly the theory which assigns the origin of the human mind to the process of evolution, I have assuredly not set up a man of straw. I stand confronted with an hypothesis which directly encounters the idea that the human intellect is a creation, in the sense of a direct, intelligent, conscious, and purposed production of a special character, as the human mind and hand, in the production of whatever is permitted to finite capacities, purposely creates some new and independent object of its wishes, its desires, or its wants. The human mind, says the scientist, was not created by a spiritual being as a spiritual existence independent of matter, but it grew out of matter, that was at first so organized that it did not manifest what we call intellect, but that could so improve its own organization as to evolve out of matter what we know as mind.
And here I lay out of view entirely the comparative dignity of man as a being whose existence is to be accounted for by the one hypothesis or the other, because this comparative dignity is not properly an element in the question of probability. The doctrine of evolution, as expounded by Darwin and other modern scientists, may be true, and we shall still have reason to exclaim with Hamlet, "What a piece of work is man!"
On the other hand, the hypothesis that man is a special creation of an infinite workman, if true, does not enhance the mere a priori dignity of the human race. It may, and it will hereafter appear that it does, establish the moral accountability of man to a supreme being, a relation which, if I correctly understand the doctrine of evolution, is left out of the system that supposes intellect to be evolved out of the improving process by which matter becomes nervous organization, whose action exhibits those manifestations which we call mind. The moral accountability of man to a supreme being may, if it becomes established by proper evidence, be a circumstance that distinguishes him from other animals, and may, therefore, raise him in the scale of being. But then this dignity is a fact that comes after the process of reasoning has shown the relation of creator and creature, and it should not be placed at the beginning of the process among the proofs that are to show that relation. Mr. Darwin, in concluding his great work, "The Descent of Man," which he maintains to have been from some very low type of animated creature, through the apes, who became our ancestors, and who were developed into the lowest savages, and finally into the civilized man, has anticipated that his theory will, he regrets to say, be "highly distasteful to many"; and he adds, by way of parrying this disgust, that "he who has seen a savage in his native land will not feel much shame if forced to acknowledge that the blood of some more humble creature flows in his veins." For his own part, he adds, he would as soon be descended from a certain heroic little monkey who exposed himself to great danger in order to save the life of his keeper, as from a savage who delights to torture his enemies, offers bloody sacrifices, practices infanticide, etc. Waiving for the present the question whether the man who is called civilized is necessarily descended from or through the kind of savage whom Mr. Darwin saw in the Tierra del Fuego, or whether that kind of savage is a deteriorated offshoot from some higher human creatures that possessed moral and intellectual characteristics of a more elevated nature, I freely concede that this question of the dignity of our descent is not of much logical consequence. However distasteful to us may be the idea that we are descended from the same stock as the apes, and that their direct ancestors are to be traced to some more humble creature until we reach the lowest form of organized and animated matter, the dignity of our human nature is not to be reckoned among the probabilities by which our existence is to be accounted for. It is, in this respect, like the feeling or sentiment which prompts us to wish to find an infinite creator, the father of our spirits and the creator of our bodies. As a matter of reasoning, we must prove to ourselves, by evidence that satisfies the mind, that God exists. Having reached this conviction, the belief in his existence becomes a vast and inestimable treasure. But our wish to believe in God does not help us to attain that belief. In the same way our feeling about the dignity of man, the nobleness or ignobleness of our descent from or through one kind of creature or another, may be a satisfaction or a dissatisfaction after we have reached a conclusion, but it affords us no aid in arriving at a satisfactory conclusion from properly chosen premises.
And here, in advance of the tests which I shall endeavor to apply to the existence of God and the existence of man as a special creation, I desire to say something respecting the question of a logical antagonism between science and religion. I have often been a good deal puzzled to make out what those well-meaning persons suppose, who unwarily admit that there is no necessary antagonism between what modern science teaches and what religion teaches. Whether there is or is not, depends upon what we mean by science and religion. If by science we understand the investigation of Nature, or a study of the structure and conditions of everything that we can subject to the observation of our senses, and the deduction of certain hypotheses from what we observe, then we must compare the hypotheses with the teachings or conclusions which we derive from religion. The next question, therefore, is, What is religion? If we make it to consist in the Mosaic account of the creation, or in the teachings of the Bible respecting God, we shall find that we have to deal with more or less of conflict between the interpretations that are put upon a record supposed to have been inspired, and the conclusions of science. But if we lay aside what is commonly understood by revealed religion, which supposes a special communication from a superior to an inferior being of something which the former desires the latter to know, after the latter has been for some time in existence, then we mean by religion that belief in the existence of a superior being which we derive from the exercise of our reasoning powers upon whatever comes within the observation of our senses, and upon our own intellectual faculties. In other words, for what we call natural religion, we look both outward and inward, in search of a belief in a Supreme Being. We look outward, because the whole universe is a vast array of facts, from which conclusions are to be drawn; and among this array of facts is the construction of our bodies. We look inward, because our own minds present another array of facts from which conclusions are to be drawn. Now, if the conclusions which the scientist draws from the widest observation of Nature, including the human mind itself, fail to account for the existence of the mind of man, and natural religion does account for it, there is an irreconcilable conflict between science and religion. I can not avoid the conviction that Mr. Darwin has missed the point of this conflict. "I am aware," he says, "that the conclusions arrived at in this work will be denounced by some as highly irreligious; but he who denounces them is bound to show why it is more irreligious to explain the origin of man, as a distinct species by descent from a lower form, through the laws of variation and natural selection, than to explain the birth of the individual through the laws of ordinary reproduction." I do not understand him, by the terms "religious" or "irreligious," to refer to anything that involves praise or blame for adopting one hypothesis rather than another. I suppose he meant to say that a belief in his theory of the descent of man as a species is no more inconsistent with a belief in God than it is to believe that the individual is brought into being through the operation of the laws of ordinary reproduction which God has established. This would be strictly true, if the hypothesis of man's descent as a distinct species from some lower form accounted for his existence by proofs that satisfy the rules of evidence by which our beliefs ought to be and must be determined. In that case, there would be no inconsistency between his hypothesis and that to which natural religion conducts us. On the other hand, if the Darwinian hypothesis fails to establish a relation between the soul of man, as a special creation, and a competent creator, then the antagonism between this hypothesis and natural religion is direct, immediate, and irreconcilable; for the essence of religion consists in that relation, and a belief in that relation is what we mean, or ought to mean, by religion.
There is another form in which Mr. Darwin has depreciated the idea of any antagonism between his theory and our religious ideas, but it has the same logical defect as the suggestion which I have just considered, because it involves the same assumption. It is put hypothetically, but it is still an assumption, lacking the very elements of supreme probability that can alone give it force. "Man," he observes, "may be excused for feeling some pride at having risen, not through his own exertions, to the very summit of the organic scale; and the fact of his having so risen, instead of being aboriginally placed there, may give him some hope for a still higher destiny in the distant future." I certainly would not misrepresent, and I earnestly desire to understand, this distinguished writer. It is a little uncertain whether he here refers to the hope of immortality, or of an existence after the connection between our minds and our bodies is dissolved, or whether he refers to the further elevation of man on this earth in the distant future of terrestrial time. If he referred to the hope of an existence after what we call death, then he ought to have shown that his theory is compatible with such a continued existence of the soul of man. It will be one of the points on which I propose to bestow some attention, that the doctrine of evolution is entirely incompatible with the existence of the human soul for one instant after the brain has ceased to act as an organism, and death has wholly supervened; because that doctrine, if I understand it rightly, regards the intellect of man as a high development of what in other animals is called instinct, and instinct as a confirmed and inherited habit of animal organism to act in a certain way. If this is a true philosophical account of the origin and nature of intellect, it can have no possible individual existence after the organ called the brain, which has been in the habit of acting in a certain way, has perished, any more than there can be a digestion of food after the stomach or other assimilating organ has been destroyed. If, on the contrary, the mind of man is a special creation, of a spiritual essence, placed in an intimate union with the body for a temporary period, and made to depend for a time on the organs of that body as its means of manifestation and the exercise of its spiritual faculties, then it is conceivable that this union may be severed and the mind may survive. Not only is this conceivable, but, as I shall endeavor hereafter to show, the proof of it rises very high in the scale of probability—so high that we may accept it as a fact, just as confidently as we accept many things of which we can not have absolute certainty.
And here I think it needful, although not for all readers, but for the great majority, to lay down as distinctly as I can the rules of evidence which necessarily govern our beliefs. I do so because, in reading the works of many of the modern scientists who have espoused the Darwinian doctrine of evolution, I find that the rules of evidence are but little observed. There is a very great, often an astonishingly great, accumulation of facts, or of assumed facts. It is impossible not to be impressed by the learning, the industry, and the range of these writers. Nor would I in the least impugn their candor, or question their accuracy as witnesses of facts, which I am not competent to dispute if I were disposed to do so. But there is one thing for which I may suppose myself competent. I have through a long life been accustomed to form conclusions upon facts; and this is what every person does and must do who is asked to accept a new theory or hypothesis of any kind upon any subject.
Most of our beliefs depend upon what is called circumstantial evidence. There are very few propositions which address themselves to our belief upon one direct and isolated proof. We may class most of the perceptions of our senses among the simple and unrelated proofs which we accept without hesitation, although there is more or less of an unconscious and instantaneous process of reasoning, through which we pass before the evidence of our senses is accepted and acted upon. Then there are truths to which we yield an instant assent, because they prove themselves, as is the case with the mathematical or geometrical problems, as soon as we perceive the connection in the steps of the demonstration. Besides these, there are many propositions which, although they involve moral reasoning, have become axioms about which we do not care to inquire, but which we assume to have been so repeatedly and firmly established that it would be a waste of time to go over the ground again whenever they come up. But there is a very large class of propositions which address themselves to our belief, which do not depend on a single perception through our senses, and are not isolated facts, and are not demonstrable by mathematical truth, and are not axioms accepted because they were proved long ago, and have by general consent been adopted into the common stock of ideas. The class of beliefs with which the rules of circumstantial evidence are concerned are those where the truth of the proposition, or hypothesis, is a deduction from many distinct facts, but the coexistence of which facts leads to the inevitable conclusion that the proposition or hypothesis is true. We can not tell why it is that moral conviction is forced upon us by the coexistence of certain facts and their tendency to establish a certain conclusion. All we know is, that our minds are so constituted that we can not resist the force of circumstantial evidence if we suffer our faculties to act as reason has taught them. But, then, in any given case, whether we ought to yield our belief in anything where we have only circumstantial evidence to guide us, there are certain rules to be observed. The first of these rules is, that every fact in a collection of proofs from which we are to draw a certain inference must be proved independently by direct evidence, and must not be itself a deduction from some other fact. This is the first step in the process of arranging a chain of moral evidence. There is a maxim in this branch of the law of evidence that you can not draw an inference from an inference. In other words, you can not infer a fact from some other fact, and then unite the former with two or more independent facts to make a chain of proofs. Every link in the chain must have its separate existence, and its existence must be established by the same kind and degree of evidence as if it were the only thing to be proved. The next rule is to place the several facts, when so proved, in their proper relation to each other in the group from which the inference is to be drawn. In circumstantial evidence a fact may be established by the most direct and satisfactory proofs, and yet it may have no relation to other facts with which you attempt to associate it. For example, suppose it to be proved that A on a certain occasion bought a certain poison, and that soon after B died of that kind of poison; but it does not appear that A and B were ever seen together, or stood in any relation to each other. The fact that A bought poison would have no proper relation to the other fact that B died of that kind of poison. But introduce by independent evidence the third fact, that A knew B intimately, and then add the fourth fact, that A had a special motive for wishing B's death, you have some ground for believing that A poisoned B, although no human eye ever saw the poison administered. From this correlation of all the facts in a body of circumstantial evidence, there follows a third rule, namely, that the whole collection of facts, in order to justify the inference sought to be drawn from them, must be consistent with that inference. Thus, the four facts above supposed are entirely consistent with the hypothesis that A poisoned B. But leave out the two intermediate facts, or leave out the last one, and B might as well have been poisoned by C as by A. Hence there is a fourth rule: that the collection of facts from which an inference is to be drawn must not only be consistent with the probable truth of that inference, but they must exclude the probable truth of any other inference. Thus, not only must it be shown that A bought poison, that B died of poison, that A was intimate with B and had a motive for wishing B's death, but, to justify a belief in A's guilt, the motive ought to be shown to have been so strong as to exclude the moral probability that B was poisoned by some one else, or poisoned himself. It is in the application of these rules that in courts of justice the minds of jurymen often become perplexed with doubts which they can not account for, or else they yield a too easy credence to the guilt of the accused when the question of guilt depends upon circumstantial evidence.
I shall not spend much time in contending that these rules of evidence must be applied to scientific investigations which are to affect our belief in such a proposition as the descent of man from a common ancestor with the monkey. This is not only an hypothesis depending upon circumstantial evidence, but it is professedly a deduction from a great range of facts and from a very complex state of facts. In reasoning upon such subjects, when the facts which constitute the chain of circumstantial evidence are very numerous, we are apt to regard their greater comparative number as if it dispensed with a rigid application of the rules of determination. Every one can see, in the illustration above employed, borrowed from criminal jurisprudence, that the facts which constitute the chain of circumstantial evidence ought to be rigidly tested by the rules of determination before the guilt of the accused can be safely drawn as a deduction from the facts. But, in reasoning from physical facts to any given physical hypothesis where the facts are very numerous, there is a strong tendency to relax the rules of evidence, because, the greater the accumulation of supposed facts becomes, the greater is the danger of placing in the chain of evidence something that is not proved, and thus of vitiating the whole process. To this tendency, which I have observed to be very frequent among scientists, I should apply, without meaning any disrespect, the term invention. A great accumulation of facts is made, following one another in a certain order; all those which precede a certain intermediate link are perhaps duly and independently proved, and the same may be the case with those which follow that link. But there is no proof of the fact that constitutes the link and makes a complete chain of evidence. This vacuity of proof, if one may use such an expression, is constantly occurring in the writings of naturalists, and is often candidly admitted. It is gotten over by reasoning from the antecedent and the subsequent facts that the intermediate facts must have existed; and then the reasoning goes on to draw the inference of the principal hypothesis from a chain of proof in which a necessary intermediate link is itself a mere inference from facts which may be just as consistent with the non-existence as with the existence of the supposed intermediate link. In such cases we are often told very frankly that no one has yet discovered that the intermediate link ever actually existed; that the researches of science have not yet reached demonstrative proof of the existence of a certain intermediate animal or vegetable organization; that geological exploration has not yet revealed to us all the specimens of the animal or vegetable kingdoms that may have inhabited this globe at former periods of time; but that the analogies which lead down or lead up to that as yet undiscovered link in the chain are such that it must have existed, and that we may confidently expect that the actual proof of it will be found hereafter. The difficulty with this kind of reasoning is that it borrows from the main hypothesis which one seeks to establish the means of showing the facts from which the hypothesis is to be drawn as an inference. Thus, for example, the hypothesis is that the species called man is a highly developed animal formed by a process of natural selection that went on for unknown ages among the individuals descended from the progenitor of the anthropomorphous apes. The facts in the physical organization and mental manifestations of the animal called man, when viewed historically through all the conditions in which we know anything of this species, lead up to that common supposed ancestor of the apes. The facts in the physical organization and instinctive habits of the ape, when viewed historically through all the conditions in which we know anything of his species, show that he, too, was evolved by the process of natural selection out of that same ancestor. Intermediate, respectively, between the man and the monkey and their primordial natural-selection ancestor or predecessor, there are links in the chain of proof of which we have no evidence, and which must be supplied by inferring their existence from the analogies which we can trace in comparing things of which we have some satisfactory proof. Thus, the main hypothesis, the theory of natural selection as the explanation of the existence of distinct species of animals, is not drawn from a complete chain of established facts, but it is helped out by inferring from facts that are proved other facts that are not proved, but which we have reason to expect will be discovered hereafter. I need not say that this kind of argument will not do in the common affairs of life, and that no good reason can be shown why our beliefs in matters of science should be made to depend upon it.
We do not rest our belief in what is called the law of gravitation upon any chain of proof in which it is necessary to supply a link by assuming that it exists. The theory that bodies have a tendency to approach each other, that the larger mass attracts to itself the smaller by a mysterious force that operates through all space, is a deduction from a great multitude of perpetually recurring facts that are open to our observation, no one of which is inferred from any other fact, while the whole excludes the moral probability that any other hypothesis will account for the phenomena which are continually and invariably taking place around us.
This illustration of the rules of evidence, when applied to scientific inquiries, leads me to refer to one of the favorite postulates of the evolution school. We are often told that it ought to be no objection to the doctrine of evolution that it is new, or startling, or contrary to other previous theories of the existence of species. We are reminded again and again that Galileo's grand conception was scouted as an irreligious as well as an irrational hypothesis, and that the same reception attended the first promulgation of many scientific truths which no intelligent and well-informed person now doubts.[2] Then we have it asserted that the doctrine of evolution is now accepted by nearly all the most advanced and accomplished natural philosophers, especially those of the rising scientists who have bestowed most attention upon it. Upon this there are two things to be said: First, it is a matter of very little consequence that the learned of a former age did not attend to the proofs of the law of gravitation, or of any other new theory of physics, as they should have done, and that they consequently rejected it. Their logical habits of mind, their preconceived religious notions, and many other disturbing causes, rendered them incapable of correct reasoning on some particular subject, while they could reason with entire correctness on other subjects. Secondly, the extent to which a new theory is accepted by those whose special studies lead them to make the necessary investigations, does not dispense with the application of the laws of evidence to the facts which are supposed to establish the theory. The doctrine of evolution addresses itself not only to the scientific naturalist, but to the whole intelligent part of mankind. How is one who does not belong to this class of investigators to regulate his belief in the theory which they propound? Is he to take it on their authority? or is he, while he accords to their statements of facts all the assent which as witnesses they are entitled to expect from him, to apply to their deduction the same principles of belief that he applies to everything else which challenges belief, and to assent or dissent accordingly? No one, I presume, will question that the latter is the only way in which any new matter of belief should be approached. I have not supposed that any scientist questions this; but I have referred to the constant iteration that the doctrine of evolution is now generally admitted by men of science, that the assertion, supposing it to be true, may pass for just what it is worth. It is worth this and no more: that candid, truthful, and competent witnesses, when they speak of facts that they have observed, are entitled to be believed as to the existence of those facts. When they assume facts which they do not prove, but which are essential links in the chain of evidence, or when the facts which they do prove do not rationally exclude every other hypothesis excepting their own, the authority of even the whole body of such persons is of no more account than that of any other class of intelligent and cultivated men. In the ages when ecclesiastical authority exercised great power over the beliefs of men upon questions of physical science, the superiority was accorded to the authority which claimed it, and the scientist who propounded a new physical theory that did not suit the theologian was overborne. It seems to me that it is a tendency of the present age to substitute the authority of scientific experts in the place of the ecclesiastical authority of former periods, by demanding that something more than the office of witnesses of facts shall be accorded to them. We are told that it is a very important proof of the soundness of deductions, that the deductions are drawn by the greater number of the specialists who have examined the facts. Sometimes this is carried so far as to imply presumption in those who do not yield assent to the theory, as if it ought to be accepted upon the authority of the experts whose proper office it is to furnish us with the facts, and whose deductions we have to examine upon the strength of their reasoning. Those of us who are not professors of the particular science may be charged with ignorance or incapacity if we do not join in the current of scientific opinion. But, after all, the new theory challenges our belief. If we examine it at all, we must judge of it, not by the numbers of those who propound or accept it, or by any amount of mere authority, but by the soundness of the reasoning by which its professors support it.
The reader is now informed of what he may expect to find discussed in this volume. It remains for me to indicate the mode in which the discussion will be carried on. I propose to divest my own mind, and so far as I may to divest the mind of the reader, of all influence from revealed religion. I shall not refer to the Mosaic account of the creation excepting as I refer to other hypotheses. With its authority as an account given by the Deity himself through his chosen servant, I have here nothing to do. Nor shall I rely upon the revelation recorded in the New Testament. All the inquiries which I propose to make are those which lie in the domain of natural religion; and while I can not expect, in exploring this domain, to make discoveries or to find arguments which can claim the merit of originality, I may avoid traveling in a well beaten path, by pursuing the line of my own reflections, without considering whether they coincide with or differ from the reasonings of others. Although, at a former period of my life, I have studied the great writers whose speculations in the science of natural theology are the most famous and important pieces in its literature, it is more than forty years since I have looked into one of them; and I do not propose to turn to them now, in order to see whether they have or have not left any traces in my mind. It is quite possible that critics may array against me the authority of some great name or names; but even if I am to be charged with presumption in entering upon this field, it will not be found, so far as I am conscious, that I have borrowed an argument, imitated a method, or followed an example.
There is a passage in one of the writings of Lord Macaulay in which that brilliant essayist maintained that natural theology is not a progressive science. Macaulay's tendency to paradox was often aggravated by the superficial way in which he used his multifarious knowledge. As in the course of this work I am about to do that which he regarded as idle, namely, to inquire whether natural religion, aside from revelation, is of any value as a means of reaching a belief in the existence and attributes of God and the immortality of man, I cite the passage in which Macaulay makes the assertion that natural theology has made no progress from the time of the Greek philosophers to the present day: "As respects natural religion, revelation being for the present altogether left out of the question, it is not easy to see that a philosopher of the present day is more favorably situated than Thales or Simonides. He has before him just the same evidences of design in the structure of the universe that the early Greeks had. We say just the same, for the discoveries of modern astronomers and anatomists have really added nothing to the force of that argument which a reflecting mind finds in every beast, bird, insect, fish, leaf, flower, and shell. The reasoning by which Socrates in Xenophon's hearing confuted the little atheist Aristophanes, is exactly the reasoning of Paley's 'Natural Theology.' Socrates makes precisely the same use of the statues of Polycletus and the pictures of Zeuxis which Paley makes of the watch. As to the other great question, the question what becomes of man after death, we do not see that a highly educated European, left to his unassisted reason, is more likely to be in the right than a Blackfoot Indian. Not a single one of the many sciences in which we surpass the Blackfoot Indians throws the smallest light on the state of the soul after the animal life is extinct. In truth, all the philosophers, ancient and modern, who have attempted without the aid of revelation to prove the immortality of man, from Plato down to Franklin, appear to us to have failed deplorably.
"Then, again, all the great enigmas which perplex the natural theologian are the same in all ages. The ingenuity of a people just emerging from barbarism is quite sufficient to propound those enigmas. The genius of Locke or Clarke is quite unable to solve them. It is a mistake to imagine that subtile speculations touching the Divine attributes, the origin of evil, the necessity of human actions, the foundation of moral obligation, imply any high degree of intellectual culture. Such speculations, on the contrary, are in a peculiar manner the delight of intelligent children and of half-civilized men. The number of boys is not small who, at fourteen, have thought enough on these questions to be fully entitled to the praise which Voltaire gives to Zadig: 'Il en savait ce qu'on a su dans tous les ages; c'est à dire, fort peu de chose.'
"The book of Job shows that, long before letters and arts were known to Ionia, these vexing questions were debated with no common skill and eloquence under the tents of the Idumean emirs; nor has human reason, in the course of three thousand years, discovered any satisfactory solution of the riddles which perplexed Eliphaz and Zophar. Natural theology, then, is not a progressive science."[3]
Here, in the space of two not very long paragraphs, is a multitude of allusions which evince the range of Lord Macaulay's reading, but which are employed, without very close thinking, in a quite inaccurate way, to sustain assertions that are not true. If he had said that a modern philosopher has before him in the structure of the universe not only all the same evidence of design which the early Greeks had, but a great deal more, he would have hit the exact truth. It is simple extravagance to say that modern astronomy has added nothing to the strength of the argument which shows the existence of a supreme lawgiver and artificer of infinite power and skill. What did the early Greeks know about the structure of the solar system, the law of universal gravitation, and the laws of motion? Compare the ideas entertained by the Greek philosophers of the phenomena of the universe with those which modern astronomy has enabled a modern philosopher to assume as scientific facts established by rigorous demonstration; compare what was known before the invention of the telescope with what the telescope has revealed; compare the progress that was made in Greek speculative philosophy from the time of Thales to the time of Plato, and then say whether natural religion had not made advances of the greatest importance even before modern science had multiplied the means for still greater progress. A brief summary of the Greek philosophy concerning the producing causes of phenomena will determine whether Lord Macaulay was right or wrong in the assertion that the "early Greeks" had as good means of making true deductions in natural theology as the means which exist to-day.
All scholars who have attended to the history of Greek speculation know that the Greeks held to the belief in polytheistic personal agents as the active producers of the phenomena of Nature. This was the system of Homer and Hesiod and the other old poets. This was the popular belief held throughout all the Hellenic world, and it continued to be the faith of the general public, not only after the different schools of philosophy had arisen, but down to and after the time when St. Paul stood on Mars Hill and told the men of Athens how he had found that they were in all things too superstitious. Thales, who flourished in the first half of the sixth century before Christ, was the first Greek who suggested a physical agency in place of a personal. He assumed the material substance, water, to be the primordial matter and universal substratum of everything in Nature. All other substances were, by transmutations, generated from water, and when destroyed they all returned into water. His idea of the earth was that it was a flat, round surface floating on the immense watery expanse or ocean. In this he agreed with the old poets; but he did not, like them, suppose that the earth extended down to the depths of Tartarus. The Thalesian hypothesis, therefore, rejected the Homeric Okeanus, the father of all things, and substituted for that personal agency the agency of one primordial physical substance, by its own energy producing all other substances. This is about all that is known of the philosophy of Thales, and even this is not known from any extant writing of his, but it is derived from what subsequent writers, including Aristotle, have imputed to him.[4] Why Lord Macaulay should have selected Thales as the Greek philosopher who was as favorably situated as a philosopher of the present day for dealing with questions of natural religion, is not very apparent. All that Thales did, assuming that we know what he did, was to strike out a new vein of thought, the direct opposite of the poetical and popular idea of the origin of phenomena.
From Thales to Plato, a century and a half intervened.[5] During this period there arose, according to Mr. Grote, twelve distinct schemes of philosophy, the authors of which that learned Englishman has enumerated, together with an admirable summary of their respective systems. From this summary certain things are apparent. All these philosophers, from Thales to Democritus, while each speculated upon Nature in an original vein of his own, endeavored to find an explanation or hypothesis on which to account for the production and generation of the universe by some physical agency apart from the mythical personifications which were believed in by the populace and assumed in the poetical theologies. Some of them, without blending ethics and theology in their speculations, adopted, as the universal and sufficient agents, the common, familiar, and pervading material substances, such as water, fire, air, etc.; others, as Pythagoras and his sect, united with ethical and theological speculations the idea of geometrical and arithmetical combinations as the primal scientific basis of the phenomena of Nature. But what was common to all these speculations was the attempt to find a scientific basis on which to explain, by physical generation, by transmutation and motion from place to place, the generation of the Kosmos, to take the place of generation by a divine personal agency or agencies. But while these speculations were of course unsuccessful, their abundance and variety, the inventive genius which they exhibit, the effort to find a scientific basis apart from the popular and poetic belief in a multitude of personal and divine agencies, constitute, as Mr. Grote has well said, "one of the most memorable facts in the history of the Hellenic mind"; and "the mental effort required to select some known agency and to connect it by a chain of reasoning with the result, all this is a new phenomenon in the history of the human mind." Such an amount of philosophical speculations could not go on for a century and a half without enlarging the means for dealing with questions of natural theology; for they very nearly exhausted the "causings and beginnings" which could be assigned to regular knowable and predictable agencies; and these they carried through almost every conceivable form of action by which such agencies could be supposed to operate. While the authors of these systems of philosophy were constantly hampered by the popular and poetic conceptions of a diversified and omnipresent polytheistic agency, a belief which, as Mr. Grote has said, was "eminently captivating and impressive," and which pervaded all the literature of their time, their speculations accumulated a vast fund of ideas in the sphere of scientific explanations, which, although unsatisfactory to modern science, became, when we reach Plato, the principal influence which led him to revert to the former idea of a divine agency, intentionally and deliberately constructing out of a chaotic substratum the system of the Kosmos; and which also led him to unite with it the idea of a mode in which it acted on and through the primordial elements of matter.
So that, from the class of philosophers to whom Lord Macaulay presumably referred as "the early Greeks," down to and including Plato, there was a great advance. The earlier Greek philosophers did not divide substance from its powers or properties, nor did they conceive of substance as a thing acted upon by power, or of power as a thing distinct from substance. They regarded substance, some primordial substance, with its powers and properties, as an efficient and material cause, and as the sole cause, as a positive and final agent. They did not seek for a final cause apart from the substances which they supposed to be the sole agents operating to produce important effects. But, inasmuch as they carried their various theories through nearly the whole range of possible speculation, they enabled Plato and Aristotle to see that there was a fundamental defect in their reasoning; that there must be an abstract conception of power as something distinct from substance or its properties. It was by Plato and Aristotle that this abstract conception was reached, of course without any influence of what we regard as revelation; and, although they did not always describe correctly the mode in which this power had acted, their perception of the logical necessity for such a final cause marks a great progress in philosophical speculation. It entirely refutes Lord Macaulay's assertion that natural theology is not a progressive science. It had made great progress from Thales to Plato; and while in a certain sense it is true that "a modern philosopher has before him just the same evidence of design in the structure of the universe which the early Greeks had"—that is, he has the same physical phenomena to observe—it is not true that the early Greeks did not develop conceptions of the origin of the universe valuable to their successors. Lord Macaulay should not have compared Thales with the modern philosopher, in respect of advantage of situation, but he should have compared the modern philosopher with Plato, and Plato with his predecessors; and if he had done this, he could not have asserted with any show of truth that natural theology has made no advance as a science from the time of Thales, the Milesian philosopher, and Simonides, the poet, to the present day. I shall have occasion hereafter to speak of the masterly intellectual power by which Plato wrought out his conception of a formative divine agency in the production of the Kosmos, and the bold and original speculation by which he avoided the charge of infidelity toward the established religion of his countrymen.
When I come to speak of what modern astronomy has done in furnishing us with new means of sound philosophical speculation on the being, attributes, and methods of God, it will be seen whether Lord Macaulay is correct in the assertion that it has added nothing to the argument. At present I will briefly advert to what the "early Greeks," or any of the Greeks, knew of the structure of the solar system. We learn, from a work which dates from nearly the middle of the second century of the Christian era, what was the general conception of the solar system among the ancients, including the Greeks. This work is known as the "Almagest" of Ptolemy, and the name of the "Ptolemaic System" has been given to the theory which he describes. This theory was common to all the ancient astronomers, Ptolemy's statement of it being a compendium of what they believed. Its principal features are these: 1. The heavens are a vast sphere, in which the heavenly bodies are set, and around the pole of this sphere they revolve in a circle every day. 2. The earth is likewise a sphere, and is situated in the center of the celestial plane as a fixed point. The earth having no motion, and being in the center of all the motions of the other bodies, the diurnal revolutions of those bodies are in a uniform motion around it. 3. The sun, being one of the heavenly bodies making a revolution around the earth, was supposed to be placed outside of the position of Venus in the heavenly sphere. The order of the Ptolemaic system was thus: The moon was first, being nearest to the earth; then came Mercury and Venus, the sun being between Venus and Mars. Beyond Mars came Jupiter and Saturn. Plato's arrangement was in one respect different, his order being the moon, the sun, Mercury, Venus, Mars, Jupiter, and Saturn. But this ideal heavenly sphere, with the earth in the center of all the revolutions of the other bodies, and remaining quiescent—a theory which was common to all the ancient astronomers—was the result of observing the motions of the heavenly bodies as they appear to a spectator on the earth. Such a spectator would have this appearance of a celestial sphere presented to him wherever he might be; and, judging from the apparent motions of the heavenly bodies relative to his own position at the center, he would conclude that the earth is at that center, and that it remains at rest, supported on nothing. It required certain discoveries to explode this system of a celestial sphere. First came Copernicus, who, about the middle of the sixteenth century of our era, published his demonstrations, which convinced the world of two great propositions: 1. That the diurnal revolution of the heavens is nothing but an apparent motion, caused by the revolution of the earth on its own axis. 2. That the earth is but one of a group of planets, all of which revolve around the sun as a center. Next came Kepler, who, in the early part of the seventeenth century, recognizing the truth of the Copernican system, determined the three laws of planetary motion: 1. That the orbit of each planet is an ellipse, the sun being in one focus. 2. That as each planet moves around the sun, the line which joins it to the sun passes over equal areas in equal times. 3. That the square of the time of a planet's revolution around the sun is in proportion to the cube of its mean distance from the sun. These laws were discovered by Kepler as deductions made upon mathematical principles from observations which had to be carried on without the aid of the telescope, and without that knowledge of the general laws of motion which came later. Kepler's laws, although in the main correct, were subsequently found to be subject to certain deviations in the planetary motions. It was when Galileo, the contemporary of Kepler, who, if he was not the first inventor of the telescope, was the first to use it in astronomical observations, was able by means of it to discover the general laws of motion, that the substantial accuracy of Kepler's three laws could be proved, while at the same time the deviations from them were accounted for. Still, there was wanting the grand discovery, which would disclose the cause of these motions of the planets in elliptical orbits, and the relations between their distances and their times of revolution, and thus reduce the whole of the phenomena to a general law. Descartes, who flourished 1596-1650, first attempted to do this by his theory of Vortices. He supposed the sun to be immersed in a vast fluid, which, by the sun's rotation, was made to rotate in a whirlpool, that carried the planets around with it, the outer ones revolving more slowly because the parts of the ethereal fluid in which they were immersed moved more slowly. This was a reversion back to some of the ancient speculations. It was reserved for Newton to discover the law of universal gravitation, by which, in the place of any physical connection between the bodies of the solar system by any intervening medium, the force of attraction exerted by a larger body upon a smaller would draw the smaller body out of the straight line that it would pursue when under a projectile force, and would thus convert its motion into a circular revolution around the attracting body, and make the orbit of this revolution elliptical by the degree in which the attracting force varied in intensity according to the varying distance between the two bodies. When Newton's laws of motion were discovered and found to be true, the phenomena of the solar system were explained.
It may be interesting, before leaving for the present this branch of the subject, to advert more particularly to one of the philosophical systems of the Greeks, which, when compared with the discoveries of modern astronomy, illustrates the great addition that has been made to our means of sound speculation upon the origin of the material universe. I refer to the system of the Pythagoreans—one of the most remarkable instances of the invention of facts to fit and carry out a theory that can be found in the history of philosophy, although we are not without striking examples of this practice in modern speculations. It has already been seen that, during the whole period of Greek philosophy before the time of Plato, the problem was to find a primordial and universal agent by which the sensible universe was built up and produced; supplying, that is to say, the matter and force required for the generation of successive products.[6] It has been seen that the Thalesian philosophers undertook to solve this problem by the employment of some primordial physical substance, such as water, fire, air, etc. Pythagoras and his school held that the essence of things consisted in number; by which they did not mean simply that all things could be numbered, but they meant that numbers were substance, endowed with an active force, by which things were constituted as we know them. In the Pythagorean doctrine number was the self-existing reality; not, as in Plato's system of ideas, separate from things, but as the essence or determining principles of things, and having, moreover, magnitude and active force.[7] This remarkably subtle conception of an agent in the production of material things evinces the effort that was making, in a direction opposite to that of Thales and his immediate successors, to find a First Cause. It was carried out by the Pythagoreans in the movements of the heavenly bodies, in the works of human art, and in musical harmony; in all of which departments, according to Mr. Grote, they considered measure and number as the producing and directing agencies. We are here concerned only with their application of this theory to the celestial bodies. One of their writers is quoted by Mr. Grote as a representative of the school which was founded by Pythagoras (about 530 B. C.), and which extended into the Græco-Italian cities, where, as a brotherhood, they had political ascendency until they were put down and dispersed about 509 B. C.; but they continued for several generations as a social, religious, and philosophical sect. According to this writer (Philolaus), "the Dekad, the full and perfect number, was of supreme and universal efficacy as the guide and principle of life, both to the Kosmos and to man. The nature of number was imperative and law-giving, affording the only solution of all that was perplexing or unknown; without number all would be indeterminate and unknowable."
Accordingly, the Pythagoreans constructed their system of the universe by the all-pervading and producing energy of this primordial agent, Number, in the manner thus described by Mr. Grote (i, 12-15): "The Pythagoreans conceived the Kosmos, or the universe, as one single system, generated out of numbers. Of this system the central point—the determining or limiting One—was first in order of time and in order of philosophical conception. By the determining influence of this central constituted One, portions of the surrounding Infinite were successively attracted and brought into system: numbers, geometrical figures, solid substances were generated. But, as the Kosmos thus constituted was composed of numbers, there could be no continuum; each numeral unit was distinct and separate from the rest by a portion of vacant space, which was imbibed, by a sort of inhalation, from the infinite space or spirit without. The central point was fire, called by the Pythagoreans the Hearth of the Universe (like the public hearth or perpetual fire maintained in the prytaneum of a Grecian city), or the watch-tower of Zeus. Around it revolved, from west to east, ten divine bodies, with unequal velocities, but in symmetrical movement or regular dance. Outermost was the circle of the fixed stars, called by the Pythagoreans Olympus, and composed of fire like the center. Within this came successively, with orbits more and more approximating to the center, the five planets, Saturn, Jupiter, Mars, Venus, Mercury; next, the sun, the moon, and the earth. Lastly, between the earth and the central fire, an hypothetical body, called the Antichthon, or counter-earth, was imagined for the purpose of making up a total represented by the sacred number ten, the symbol of perfection and totality. The Antichthon was analogous to a separated half of the earth, simultaneous with the earth in its revolutions, and corresponding with it on the opposite side of the central fire. The inhabited portion of the earth was supposed to be that which was turned away from the central fire and toward the sun, from which it received light. But the sun itself was not self-luminous: it was conceived as a glassy disk, receiving and concentrating light from the central fire, and reflecting it upon the earth, so long as the two were on the same side of the central fire. The earth revolved in an orbit obliquely intersecting that of the sun, and in twenty-four hours, round the central fire, always turning the same side toward that fire. The alternation of day and night was occasioned by the earth being, during a part of such revolution, on the same side of the central fire with the sun, and thus receiving light reflected from him; and during the remaining part of her revolution on the side opposite to him, so that she received no light at all from him. The earth, with the Antichthon, made this revolution in one day; the moon, in one month; the sun, with the planets Mercury and Venus, in one year; the planets Mars, Jupiter, and Saturn in longer periods respectively, according to their distances from the center; lastly, the outermost circle of the fixed stars (the Olympus, or the Asslanes), in some unknown period of very long duration.
"The revolutions of such grand bodies could not take place, in the opinion of the Pythagoreans, without producing a loud and powerful sound; and as their distances from the central fire were supposed to be arranged in musical ratios, so the result of all these separate sounds was full and perfect harmony. To the objection, Why were not the sounds heard by us? they replied that we had heard them constantly and without intermission from the hour of our birth; hence they had become imperceptible by habit."
Beautiful as was this theory—the origin of the phrase, "the music of the spheres"—it owed its perfection as a theory to a pure invention, resorted to in order to carry out the hypothesis of the sacred number Ten, of which all the greater numbers were only compounds and derivatives. This perfect and normal Ten, as a basis on which to rest a bold astronomical hypothesis, required the imagination of the Antichthon, or counter-earth, in order, with the other bodies, to make up the primordial number to whose generative force the whole of these bodies owed their origin. The resort to this conception of number, as a formative and active agent, was doubtless due to the fact that the Pythagoreans were the earliest cultivators of mathematical science. We are told, in fact, that they paved the way for Euclid and Archimedes, notwithstanding their symbolical and mystical fancies, and from their mathematical studies they were led to give exclusive supremacy to arithmetical and geometrical views of Nature. But what is curious about this whole speculation is, that in the invention or substitution of certain facts in order to make a perfect theory, it resembles some modern hypotheses, in which facts have been assumed, or argued as existing from analogies, when there is no evidence which establishes them. Modern instances of this will appear hereafter.
Enough has now been said about the speculations of the "early Greeks" to show the extravagance of Lord Macaulay's assertion that the discoveries of modern astronomy have placed the modern philosopher in no better situation to make safe deductions in natural theology than that occupied by the Hellenic philosophers from Thales to Plato. The evidences of design in the formation of the solar system—of that kind of design which acts in direct and specific exertions of a formative will—have been enormously multiplied by the discoveries of modern astronomy. Those discoveries, instead of leaving us to grope among theories which require the invention or imagination of facts, relate to facts that are demonstrated; and they tend in the strongest manner to establish the hypothesis of an infinite Creator, making laws to govern material objects, and then creating a system of objects to be governed by those laws. In a future chapter I shall endeavor to show why this hypothesis in regard to the solar system is most conformable to the rules of rational belief.
Not to anticipate what will be said hereafter concerning the modern discoveries in anatomy and in comparative zoölogy, it is enough to say here that in the writings of the Greek philosophers, especially of Plato and Aristotle, we may discover what the Greeks knew or did not know, and may therefore compare their knowledge with what is now known. What was known about the human anatomy to the Greeks of Plato's time is probably pretty well reflected in his "Timæus," the celebrated dissertation in which he developed his theory of the Kosmos; for, although Plato in that superb philosophical epic made use of the organs of the human body for ethical and theological purposes, and did not make a special study of matters of fact, it is not probable that in his mode of using them he so far departed from the received ideas of his time respecting the human anatomy that his treatise would have been regarded by his contemporaries as an absurdity. Indeed, Mr. Grote considered that Plato had that anatomical knowledge which an accomplished man of his time could hardly fail to acquire without special study.[8] Moreover, even Galen, who came five centuries after Plato, and whose anatomical knowledge was far greater than could have been commanded in Plato's day, was wholly wrong in respect to the functions of some of the human organs. He agreed with Plato's ethical view of the human organism, but not in his physiological postulates. He considered, according to Mr. Grote, that Plato had demonstrated the hypothesis of one soul to be absurd; he accepted Plato's triplicity of souls, but he located them differently. He held that there are three "originating and governing organs in the body: the brain, which is the origin of all the nerves, both of sensation and motion; the heart, the origin of the arteries; the liver, the sanguifacient organ, and the origin of the veins which distribute nourishment to all parts of the body. These three are respectively the organs of the rational, the energetic, and the appetitive soul."[9] Plato, on the other hand, had placed the rational soul in the cranium, the energetic soul in the thoracic cavity, and the appetitive soul in the abdominal cavity; he connected them by the line of the spinal marrow continuous with the brain, making the rational soul immortal, and the two inferior souls, or two divisions of one inferior soul, mortal. Galen did not decide what is the essence of the three souls, or whether they are immortal. Plato assigned to the liver a very curious function, or compound of functions, making it the assistant of the rational soul in maintaining its ascendency over the appetitive soul, and at the same time making it the seat of those prophetic warnings which the gods would sometimes vouchsafe to the appetitive soul, especially when the functions of the rational soul are suspended, as in sleep, disease, or ecstasy.
But while there was much scientific progress from Plato to Galen, and while Galen's physiological ideas of the functions of the brain, the heart, and the liver held their place until Harvey's discovery of the circulation of the blood in the seventeenth century, that discovery and the subsequent investigations proved that Galen, although not far wrong as to the brain, was wholly wrong as to the liver, and partially wrong as to the heart. Yet Galen's physiological theories concerning these organs were founded on many anatomical facts and results of experiments, such as could then be made.
There is another fact which marks the state of anatomical knowledge among the Greeks in the time of Plato, and of Aristotle, who belonged to the same century. The "Timæus" of Plato shows that there were physicians at that period, and that he was acquainted with the writings of Hippocrates. The important fact is, as stated by Mr. Grote, that "the study and practice of medicine was at that time greatly affected by the current speculations respecting Nature as a whole; accomplished physicians combined both lines of study, implicating cosmical and biological theories."[10]
It is now only needful to say that modern anatomy and physiology afford aids to sound deductions in natural theology in reference to the structure of the human body as an animal organism, and all the functions of its different organs, which immeasurably transcend all that was known or assumed among the early Greeks, or in the time of Plato and Aristotle, or in the time of Galen. Notwithstanding the dispute whether the origin of man as an animal is to be referred to a special act of creation, or to the process of what has been called evolution, there can be no controversy on one point, namely, that modern anatomy and physiology have vastly increased our knowledge of the structure of the human frame, and the means of rational speculation upon the nature of intellect, as compared with any means that were possessed by the most accomplished and learned of the Greeks of antiquity. It matters little on which side of the controversy, between creation and evolution, the great anatomists of the present day range themselves. It is upon the facts which their investigations have revealed that we have to judge of the probable truth of the one hypothesis or the other. The probable destiny of man as an immortal being is an inquiry that has certainly lost nothing by our increased knowledge of the facts in his animal structure which tend to support the hypothesis of design in his creation.
Lord Macaulay attributes an utter failure to the efforts of the philosophers, from Plato to Franklin, to "prove" the immortality of the soul without the help of revelation. What did he mean by proof? Revelation is, of course, the only direct proof. It is so, because it is direct testimony of a fact, proceeding from the only source that can have direct and certain knowledge of that fact. When the evidences which are supposed to establish the existence and authority of the witness have become satisfactory to us, we are possessed of proof of our immortality, and this proof is the only direct evidence of which the fact admits, and it constitutes all that should be spoken of as proof. But there is collateral although inferior evidence—inferior, because it consists in facts which show a high degree of probability that the soul of man is immortal, although this kind of evidence is not like the direct testimony of a competent witness. Is all this presumptive evidence, with its weighty tendency to establish the probable truth of immortality, to be pronounced of no value, because it belongs to a different order of proof from that derived from the assertion of a competent witness to the fact? It is one of the advantages of our situation in this life, that the collateral evidence which tends to show the high probability of a future state of existence is not withheld from us. As a supplemental aid to the direct teaching of revelation, it is of inestimable importance if we do not obscure it by theories which pervert its force, and if we reason upon it on sound philosophical principles. What we have to do in estimating the probable truth of our immortality, as shown by the science of natural religion, is to give the same force to moral evidence in this particular department of belief, that we give to the moral evidence which convinces us of many things of which we have no direct proof, or of which the direct proof lies in evidence of another kind.
"He knew as much about it," said Voltaire, "as has been known in all ages—that is to say, very little indeed." This, like many of the witticisms of Voltaire, pressed into the service of an argument against the value of natural religion at the present day when studied by mature and disciplined minds, is quite out of place. What human reason has done in the course of three thousand years is not to be put on a par with the speculations of intelligent children or half-civilized men; and although some of the riddles which perplexed Eliphaz and Zophar have not had a perfectly satisfactory solution, it is quite wide from the truth to assert that there has been no approximation to a satisfactory solution, or that some of the riddles have not ceased to be the riddles which they were three thousand years ago. In that period there has been an accumulation of evidence concerning the phenomena of Nature, and the phenomena of mind, vast beyond comparison when placed in contrast with what was known in the tents of the Idumean emirs, and the importance of this accumulation of evidence is proved by the fact that theories have been built upon it which undertake to explain it by hypotheses that were never heard of before, and which may possibly leave the "riddles" in a far less satisfactory state than they were in the time of Job. On the other hand, while the companions of Job may have been unable to suggest to him any solution of the problems of life, it does not at all follow that we are as helpless as they were, even if we avail ourselves of nothing but what the science of natural theology can now teach us.[11]
It will be seen that I attach great importance to natural theology. But I do not propose to write for the confirmed believers in revelation, on the one hand, who have become convinced by the evidence which supports revelation; or for those, on the other hand, who believe nothing, and who have become confirmed in habits of thinking which unfit them for judging of the weight of evidence on such subjects as the existence of God and the creation of man. I write for that great mass of people of average intelligence, who do not understand accurately what the doctrine of evolution is as expounded by its leading representatives, and who do not know to what it leads. It will be found that in some respects there is a distinction between the school of which Darwin is the representative and the school which follows Spencer. To point out this distinction, and yet to show that both systems result in negatives which put an end to the idea of immortality, and that the weight of evidence is against both of them, is what I propose to do.
[CHAPTER II.]
The Platonic Kosmos compared with the Darwinian theory of evolution.
It is my purpose in this chapter to draw a parallel between the theory of the origin of different animals propounded in the "Timæus" of Plato and that of Mr. Darwin. The analogy between them has been briefly hinted by Mr. Grote, but he has not followed it out in detail, as it was no part of his object to make minute comparisons between any of the speculations of Plato and those of modern philosophers. The great English scholar and critic seems to regard it as somewhat uncertain how far Plato meant in the "Timæus" to have his description of the Kosmos stand as an expression of his own belief, or as a mere work of his imagination and fancy. Plato, we are told, and this is quite obvious, dealt but little with facts, while he dealt largely with theories. But, even as a pure work of the imagination, or as a philosophical epic, the daring conception of the Kosmos is wonderfully complete; and it will repay any one, who follows Mr. Grote in his analysis of it, to observe how Plato employs a process of degeneration to account for the formation of different species of animals, from the higher to the lower, by agencies that bear a strong resemblance to those which are assumed by Darwin to have worked in the opposite process of variation and natural selection, resulting in the evolution of a higher from a lower animal. But, in order to render this comparison intelligible, it is necessary to make an abstract of Plato's system of the Kosmos before adverting to the analogies between that system and the Darwinian theory. I follow, although I have greatly condensed, Mr. Grote's description of the Platonic Kosmos.
According to the Platonic idea of the Kosmos, as given in the "Timæus," there existed, anterior to all time, primordial matter in a state of chaos. This matter was not created for; according to Mr. Grote, whose authority upon such a point is the highest, the notion of absolute creation was unknown to the Greeks of antiquity, and it does not appear that Plato suggests it. But, without accounting for its existence, Plato assumes that there was matter in a condition of utter chaos before time could have had an existence; and, in order to make the chaotic condition the more impressive in its primitive destitution of all form or active principles tending to union or arrangement, he supposes that the four elements of fire, air, earth, and water had no existence save in the abstract, or as ideas and forms. But, as abstract ideas, these four elements of fire, air, earth, and water were distinct, self-existing, and indestructible, coeval with the chaotic matter which was waiting to receive their impress and to take on their distinctive elemental characters. They had already begun to act on the fundamentum, or primordial chaotic matter, as upon a recipient, but it was in a confused way and without regularity of plan, so that they had not become concrete existences or determinate agents.
In this state of things there appears upon the scene the Demiurgus, a being coeval with the chaos of matter, that is, self-existing and eternal. But, consistently with the philosophy which did not admit of the idea of absolute creation, the Demiurgus was not a creator, but an architect or designer, working on materials that lay within his reach. His moral attribute was goodness, which was, in his situation, synonymous with order, regularity, symmetry, and proportion, and, along with this tendency, he had supreme artistic skill. In other words, he was the personification of νους, or reason, working against necessity: the latter being, not what we mean by that term, something preordained and fixed, but confusion, uncertainty, irregularity, and unreason, which are to be overcome by their opposites.
Besides the chaotic matter and the ideas or forms of the four elements, as yet unrealized in the actual substances of fire, air, earth, and water, there were coeval ideas or forms of animals, or, as we should say, abstract animals, or conceptions of animals. The first and grandest of these was the eternal self-animal, or the ideal of animal existence. Next came the ideas or forms of four other animals: 1. The celestial gods; 2. Man; 3. Birds, or animals living in air; 4. Land or water animals. Bearing in mind that we are still in the region of abstract conceptions in regard to these types of animals, which as yet have no concrete existence, and that they are, so to speak, the intellectual models from which the Demiurgus is to work, in order to make the real animals conformably to the pre-existing and eternal plan, we come to the process of forming the Kosmos, which is to be the containing animal of all the other four. Out of the confused chaos of existing matter the Demiurgus proceeds to construct the Kosmos, which was to become the one self-animal, by impressing the idea or abstract form of animal upon a physical structure built out of the primordial chaotic matter and comprehending the whole of it. The first step was to bring the four elements of fire, air, earth, and water out of their chaotic and confused condition by separating them according to the forms of their eternal ideas. The total of each element, when made to take its normal form, was used in the construction of the Kosmos, which thus came to possess the whole existing body of material; "so that," to borrow the words of Mr. Grote, "there remained nothing of the four elements apart, to hurt the Kosmos from without, nor anything as raw material for a second Kosmos."
The Kosmos was made a perfect sphere, and with a perfectly smooth outer surface, without organs of sight or hearing, because there was nothing outside to be seen or heard; without organs of respiration, because there was no outside atmosphere to be breathed; and without nutritive or excrementory organs, because it was self-sufficing, being supplied with nourishment by its own decay. It was not furnished with limbs or means of locomotion or standing, because, being a sphere turning on an axis, and having only one of the seven possible varieties of movement, namely, rotation in a circle in one and the same plane, there was nothing for it to grasp or repel.[12] This body, the only-begotten, because in its formation all existing bodily material was employed, perfectly spherical and smooth, equidistant from its center to all points of its circumference, and suspended upon its own axis traversing its diameter, was now to be animated by a soul.
The Demiurgus, in the formation of the soul of the Kosmos, took three constituent ingredients and mixed them together. They were: 1. The Same, or the Identical, the indivisible and unchangeable essence of Ideas; 2. The Different, or the Plural, the divisible essence of bodies or of the elements; 3. A compound of both of these ingredients melted into one. Blended together in one grand compound, these three ingredients formed the soul of the Kosmos by first dividing the mixture into different portions, and then uniting the portions according to a complicated scale of harmonious numerical proportions. The outer or sidereal sphere of the Kosmos was made to receive the Same, or Identity, by being placed in an even and undivided rotation toward the right, turning on the great axis of the whole sphere. The interior, or planetary spheres, the five planets, and the sun and the moon, were made to be under the influence of the Different, or Diversity—that is to say, their rotations on their separate axes, all oblique, were toward the left, while the overpowering force of rotation of the outer sphere carried them along with it, although the time of their separate rotations was more or less modified by their own inherent and countermoving forces.
Thus the sentient capacity of the cosmical soul became the cognition of the Same and the Different, and the blended Same and Different, because it embodied these three ingredients in its own nature. It was invisible; rooted at its center and pervading and inclosing the whole visible body, circulating and communicating, without voice or sound, all impressions and information concerning the existing relations between the separate parts and specialties of the cosmical body.
Anterior to the Kosmos there was no time. With the rotation of the Kosmos time began. It was marked first by the eternal and unchanging rotation of the outer circle, in which were placed the fixed stars, which revolved with it in unaltered position with regard to each other; and one revolution of this outer or most rational circle made a day. The sun, moon, and planets were distributed in different portions of the Circle of the Different; one revolution of the moon marking a month, and one revolution of the sun marking a year. The earth, the first and oldest of the sidereal and planetary gods, was packed around the great axis which ran through the center of the Kosmos, and turned that axis; so that the earth regulated the movement of the great cosmical axis, and was the determining agent of night and day.
Thus far we have the formation of the Kosmos, animated with a pervading soul, the body being formed out of the whole of existing matter, molded into the specific elements of fire, air, earth, and water, and the soul being formed out of the constituent ingredients furnished by the eternal and invisible essence of ideas. The whole, body and soul of the Kosmos, was thus an animal, formed on the abstract but eternal idea or form of an animal which had existed before time began. We now approach the formation of the other animals. Of the Kosmos there could be but one. All existing material of matter had been used in his construction. He could not become a species, as there could be no second Kosmos. Something could be borrowed from him, for the formation of other animals, but nothing could be destroyed. He was not yet, however, a full copy of the model of the Generic Animal or Idea of Animal, because the eternal plan of that model required that he should be peopled or inhabited by four other animals, which might constitute species. Accordingly, the Demiurgus proceeds to form the first of these sub-animals, the gods, who are to inhabit different portions of the Kosmos. The first of these in formation was the earth, planted in the center, and made sentinel over night and day; next the fixed stars, formed chiefly out of fire, and placed in the outer circle of a fixed revolution, or the Circle of the Same, to give to it light and brilliancy. The sidereal orbs thus became animated beings, eternal and divine. They remained constantly turning round in the same relative position, but the sun, moon, and planets, belonging to the Circle of the Different, and trying to revolve by their own effort in a direction opposite to that of the outer sphere, became irregular in their revolutions and varied in their relative positions. Thus the primitive gods were the earth and the fixed stars, which revolved without variation with the Circle of the Same, and became immortal as well as visible; while the sun, moon, and planets were not among the primitive gods, but were simply spherical bodies placed in the inner Circle of the Different. The primitive gods preside over and regulate the Kosmos. From them are generated and descended the remaining gods.[13]
Having completed the Kosmos and the primitive gods, the Demiurgus paused in his work. There were still other animals to be constructed, the first and noblest of which was to be Man. But the Demiurgus, who, in the construction of these gods, had made them immortal, not in their own nature but through his determination, seems to have apprehended that, if he proceeded to construct the other animals himself, they would likewise be thereby rendered of immortal duration. He therefore assembled the newly generated gods and made to them a personal address. He informed them of their immortal existence, and of his purpose to confide to them the construction of the other animals, stating at the same time, in the case of man, that he would himself supply an immortal element which they were to incorporate with a mortal body, in imitation of the power which he had exercised in the generation of themselves. He then proceeded to compound together, but in inferior perfection and purity, the remnant of the same elements out of which he had formed the cosmical soul.[14] He then distributed the whole of this mass into souls equal in number to the fixed stars, placed each of them in a star of its own, where it would be carried round in the cosmical rotation, explained to it its immortal destiny, and that at an appointed hour of birth it would be transferred into a mortal body in conjunction with two inferior kinds of soul or mind. These irrational enemies, the two inferior souls, the rational and immortal soul would have to control and subdue, so as to live a good life. If it triumphed in the conflict, it would return after death to its own star, where in an everlasting abode it would dwell forever in unison with the celestial harmonies and perfections of the outer sphere. But, if it failed, it would be born again into an inferior body, and on the death of that body, if it continued evil, it would be again born into a still more degraded animal, through an indefinite transmigration from animal to animal, until the rational soul should have obtained the mastery over the irrational and turbulent, when it would be released and permitted to return to its own peculiar star.[15] Here, then, the Demiurgus retired, leaving to the gods the work of fabricating mortal bodies for man, and two mortal and inferior souls, with which the immortal soul was to be joined. But before he withdrew he inculcated upon the gods to construct the new mortal animal in the best manner, so that the immortal soul should have the fairest chance of guiding and governing rightly, in order that the animal might not be the cause of mischief and misery to himself; a possible and even probable result which the Demiurgus proclaimed beforehand, thus relieving himself of responsibility, and casting it, it would seem, upon the gods.[16] The latter stood, then, in the position of workmen, who have received certain directions from a superior architect, have been supplied with certain materials, and are obliged to conform to a prescribed model, the cosmical animal, as far as circumstances will allow. The Demiurgus retires, and leaves the gods to their work.
They borrow from the Kosmos, from which they are permitted to obtain materials, portions of the four elements, for the construction of the human body, with an engagement that these materials shall one day be returned. These they unite in one body by numerous minute and invisible fastenings; over this body they place a head or cranium, into which they introduce the immortal soul, making the head, with its spherical form like that of the Kosmos, and admitting of no motion but the rotary, the most divine portion of the human system and master of the body, which is to be subject and ministerial. To the body they give all the six varieties of motive power, forward, backward, upward, downward, to the right and to the left. The phenomena of nutrition and sensation begin as soon as the connection is formed between the immortal soul and the mortal body, but as the irregular movements and agitations arising from the diverse rotations of the Same and the Different convey false and foolish affirmations to the soul in the cranium. That soul is destitute of intelligence when first joined to the body, and remains so for some time. But gradually these disturbing currents abate, the rotations of the Same and the Different in the head become more regular, and the man becomes more intelligent.
It is now necessary to account for the introduction of the two mortal souls, and to show how the conflict appointed for the immortal soul became the test of a life which was to determine whether the latter should be permitted, on the death of the body, to return to its peculiar star, or whether it should be degraded into some lower form of animal. The immortal soul has its special abode in the head, which is both united to and separated from the trunk by the neck. The gods kept the two mortal souls separate, so that the rational or immortal soul might be defiled by the contact as little as possible. The better portion of the mortal soul they placed in the thoracic cavity. It was the energetic, courageous, contentious soul, placed above the diaphragm, so as to receive orders easily from the head, and to aid the rational soul in keeping the mutinous soul of appetite, which was placed below the diaphragm, in subjection.
It is unnecessary to follow here the minute anatomical descriptions which Plato gives of the different organs of the human body, or of the way in which they are supposed to act on the two divisions of the mortal soul, or to be acted on by them, or the mode in which the latter act upon the encephalic or immortal soul which is seated in the cranium. These descriptions evince much knowledge of the human anatomy, and probably all the knowledge that was possessed in Plato's time. It is immaterial how far this anatomical knowledge was correct, and of course there was in Plato's use of the various organs a great deal that was fanciful. It is sufficient, without following Mr. Grote's analysis through these details, to note that, in Plato's arrangement, the immortal soul was supposed to be fastened in the brain, the two mortal souls in the line of the spinal marrow continuous with the brain, and that this line formed the thread of connection between them all.
Passing on toward the point where the process of degradation might begin, which would result in the reduction of this new and divinely constructed animal to a lower form, we have to note, first, that it was made a non-sexual animal, being intended for an angelic type. In the original plan of the gods, it was not contemplated that this primitive type should reproduce itself by any process of generation. According to the original scheme, it would seem that every time a new immortal soul was to be brought down from its peculiar star, the process of constructing for it a mortal body would have to be repeated. Plato, Mr. Grote observes, does indeed tell us that the primitive non-sexual type had the option of maintaining itself. But this must mean that each individual of that type had the option of maintaining itself in its struggle with the debasing influences of appetite and disease. But not one representative of it has held his ground; and as it was foreseen that such an angelic type could not maintain itself, we are to look for a reconstruction of the whole organism. This came about from the degeneracy of the primitive non-sexual animal below the standard of good life which it had the option of continuing. Men whose lives had fallen below this standard became effeminate, cowardly, unjust. In their second birth, their immortal souls had to be translated into a body resembling that to which they had debased the first body into which they were born. The first transition, therefore, was from man into woman. In other words, the gods, seeing that the non-sexual primitive type did not maintain itself at the high point intended for it, reconstructed the whole organism upon the bi-sexual principle, introducing the comparatively lower type of woman. A partial transformation of the male structure makes the female. A suitable adjustment of the male organs, and the implanting of the sexual impulse in both sexes, by the agency of the gods, make provision for generative reproduction, and a species is formed, which takes the place of the primitive non-sexual type which did not reproduce itself in the original scheme. The primitive type disappears, and it disappears by a process of degradation, which it undergoes by reason of its failure to avail itself of the option which it originally had of living a good life that would entitle the immortal soul to return to its peculiar star without further conflict with the debasing tendencies to which it was exposed in the first body that it inhabited.
In this curious theory we see how a process of declension or degradation is induced by what may almost be called a choice, since the primitive human being, by not resisting the debasing tendencies of his lower nature, is made by those tendencies to assume a less divine form than that in which he originally existed. To the primitive man the gods assigned the encephalic or head-soul, which was connected with and suspended from the divine soul of the Kosmos. They assigned it to each man as his presiding genius. If he neglected it, and directed all his development toward the energetic or appetitive mortal soul, he would become debased. He did so. Hence it became necessary for the gods to reconstruct the whole organism, and in this reconstruction the primitive non-sexual type becomes the bi-sexual, and a species is formed.
It is not necessary to enter into the metaphysical argument which relates to the question of responsibility for this change from the original plan. Plato tells us that the gods foresaw it as a necessary consequence of the original scheme; and, moreover, that they foresaw that they must make preparation for the still more degenerate varieties of birds and quadrupeds, into which the corrupt and stupid part of mankind would sink, all of which were according to the great eternal scheme of the four kinds of ideal animals embraced in the idea of the Kosmos itself. But with the moral justice of the whole theory we have no concern here. We are here concerned, first, with the nature of the process by which, in the Platonic theory, the bi-sexual human race became formed out of the primitive non-sexual type; and, next, with the process by which individuals of this race became degraded into the lower animals.[17]
After the process of degradation had begun, after the primitive type had given place to the bi-sexual human race, and a species was thus formed, further degradation would be inevitable under the same causes which produced the first one. The female part of mankind would go on bringing forth new males and new females, and to each one at birth there would come from its peculiar star an immortal soul, for I do not understand that Plato's women were supposed not to be constructed, in this respect, upon the same plan as the men. But each of these newly arrived immortal souls would be placed in a mortal body in contact and conflict with the two mortal souls of appetite, disturbance, and mutiny against the divine laws of reason. Each new human being would then be exposed to further debasement, by which his or her human organs and human form would undergo transformation into a lower type of animal life. Accordingly, we find that Plato, in perfect consistency with his theory, supposes that birds are a degraded birth or formation derived from one peculiar mode of degeneracy in man, hair being transmuted into feathers and wings. If we inquire from what kind of men the birds were formed, and how they came to be assigned to the air, we shall best learn from the words employed by Mr. Grote to express Plato's idea: "Birds were formed from the harmless but light, airy, and superficial men, who, though carrying their minds aloft to the study of cosmical phenomena, studied them by visual observation and not by reason, foolishly imagining that they had discovered the way of reaching truth."[18]
Next to the birds came the land-animals, a more brutal formation. These, to borrow the words of Mr. Grote's analysis, "proceeded from men totally destitute of philosophy, who neither looked up to the heavens nor cared for celestial objects; from men making no use whatever of the rotations of their encephalic soul, but following exclusively the guidance of the lower soul in the trunk. Through such tastes and occupations, both their heads and their anterior limbs became dragged down to the earth by the force of affinity. Moreover, when the rotation of the encephalic soul from want of exercise became slackened and fell into desuetude, the round form of the cranium was lost and became converted into an oblong or some other form. These now degenerated into quadrupeds and multipeds, the gods furnishing a greater number of feet in proportion to the stupidity of each, in order that its approximation to earth might be multiplied. To some of the more stupid, however, the gods gave no feet or limbs at all, constraining them to drag the whole length of their bodies along the ground, and to become reptiles. Out of the most stupid and senseless of mankind, by still greater degeneracy, the gods formed fishes, or aquatic animals—the fourth and lowest genus after men, birds, land-animals. This race of beings, from their extreme want of mind, were not considered worthy to live on earth, or to respire thin and pure air. They were condemned to respire nothing but deep and turbid water, many of them, as oysters and other descriptions of shell-fish, being fixed down at the lowest depth or bottom. It is by such transitions (concludes the Platonic 'Timæus') that the different races of animals passed originally, and still continue to pass, into each other. The interchange is determined by the acquisition or loss of reason or rationality."[19]
Here, then, we have a process of degradation by which the different races of animals were formed, by a kind of selection which, commencing in the human species from the neglect of the encephalic soul to maintain its high duties and aims, goes on in successive debasements which result in the formation of lower and still lower animals until we reach the shell-fish fixed upon the earth at the bottom of the water. The bi-sexual principle of construction having been introduced in the human species, was continued through all the other species formed by the still descending process of deterioration, so that to each successive species there remained the power of reproducing its own type, along with the tendency to evolve a lower type by further loss of reason or rationality. It is not material to the purpose of the parallel, which I am about to draw between the Platonic and the Darwinian system, to consider the precise nature of the Platonic idea of an intelligent power, by which these successive degradations were in one sense purposely ordained. Enough is apparent on the Platonic system to show that, while these degradations were according to an eternal plan, because they resulted from the conflict between reason and unreason, order and disorder, between purity and impurity, yet the different species of animals, after man, were not special creations by an infinite power interfering in each case by a separate exercise of creative will. They were a growth of an inferior organization out of a superior through the inevitable operation of tendencies which changed the forms of the animals. As fast as these tendencies operated—and they were continually operating—the ministers of the Demiurgus, the gods, stood ready to adapt the structure to the new conditions in which the tendencies resulted, so that the new animal might be fitted to and fixed in those conditions. Still, the gods are not represented as making separate creations of new species as an act of their will, without the pre-existing operation in the preceding type of tastes and occupations which modify the structure into one of a more degraded character. It may thus be said with entire truth that the Platonic idea of the origin of the different races of animals presents a parallel to the Darwinian theory, in which it will be found that the one is the reverse of the other, both of them proceeding upon and involving analogous principles of evolution, operating in the one system from below upward, and in the other from a higher point downward. If, in the Platonic system, the idea of an original immortal soul placed in a heavenly abode, but afterward brought down and fixed in a mortal body, is the starting-point—if a conflict of a spiritual and angelic existence with corporeal and earthly tendencies is at first the predominant fact—the parallel between the Platonic process of degradation and the Darwinian process of elevation remains the same; for, in the one system, reason degenerates into instinct, and instinct at last reaches its lowest possible action, or ceases entirely; and, in the other, instinct rises from its lowest action through successive improvements until it becomes mind or intellect: so that somewhere in the two processes there must be a point where they pass each other in opposite directions, the one losing or merging intellect in instinct, the other losing and merging instinct in mind, each of the two processes being a process of development or evolution, but in opposite directions.[20]
It is not easy to ascertain at once what was Mr. Darwin's idea of the mode in which a supreme intelligence has presided over the creation. In his work on "The Descent of Man", he adduces some evidence that man was not "originally endowed with the ennobling belief in the existence of an Omnipotent God," this evidence being that numerous savage races have existed, and still exist, who have had and have no words in their language to express this idea. But this, if true, does not help us to understand what part in Mr. Darwin's theory an Omnipotent God is supposed to play. Scattered through the same work we find references to the hypothesis of such a being, and to the influences which this belief has exerted upon the advance of morality. But I assume that we are to understand that Mr. Darwin adopts as a fact, to be taken into account in judging of his theory of evolution, that there is such a being as an Omnipotent God, having equally the power to make separate creations, or to establish certain laws of matter, and to leave them to operate through secondary causes in the production and extinction of the past and present inhabitants of the world. In his work on the "Origin of Species" he refers to "what we know of the laws impressed upon matter by the Creator."[21] In his "Descent of Man" the following passage occurs toward the close of the work: "He who believes in the advancement of man from some low organized form will naturally ask, How does this bear on the belief in the immortality of the soul? The barbarous races of man, as Sir J. Lubbock has shown, possess no clear belief of this kind; but arguments, derived from the primeval beliefs of savages, are, as we have just seen, of little or no avail. Few persons feel any anxiety from the impossibility of determining at what precise period in the development of the individual, from the first trace of a minute germinal vesicle, man becomes an immortal being; and there is no greater cause for anxiety, because the period can not possibly be determined in the gradually ascending organic scale."
Surely it is a most pertinent inquiry, How does his theory of the advancement of man from some lower organized form bear on the immortality of the soul? and it is no answer to this inquiry to say that upon no hypothesis of man's origin can we determine at what precise period he becomes an immortal being. That the idea of an Omnipotent God, capable of creating a spiritual essence, or an immortal soul, is not denied by Mr. Darwin, is doubtless to be inferred from his strong affirmation that our minds refuse to accept as the result of blind chance the grand sequence of events which the birth both of the species and the individual presents to our view. That variations of structure, the union of pairs in marriage, the dissemination of seeds, and similar events, have all been ordained for some special purpose, is the hypothesis according to which he regards them as events brought about by the laws of natural selection, which laws were ordained by the Creator and left to operate. Now, while this hypothesis excludes, or tends to exclude, the idea of blind chance, it still remains to be considered whether the soul of man, or the essence which we call intellect, is in each case a direct creation of a special character, or whether it is a result from the operation of the laws which have been ordained for the action of organized matter. If it is the former, the soul may survive the destruction of the body. If it is the latter, the soul as well as all the other manifestations or exhibitions which the material body gives forth in its action, may and in all probability must cease with the organs whose action leads us falsely to believe that we are animated by an immortal spirit while we are in the flesh. If it is a necessary result of any theory that what is supposed to be the immortal soul of man is a product of the operation of certain laws imposed upon organized matter, without being a special creation of something distinct from matter, it is immaterial whether the organized form of matter with which the soul is connected, or appears to act for a time, was a special creation, or was an evolution out of some lower form, or came by blind chance. Nor is it material that we can not determine at what precise period in the genesis of the individual, by the ordinary process of reproduction, he becomes an immortal being. The question is, Does he ever become an immortal being, if in body and in mind he is a mere product of organized matter, formed from some lower type through the laws of variation and natural selection, resulting in an animal whose manifestations or exhibitions of what we call intellect or mind are manifestations of the same nature as the instincts of the lower animals, differing only in degree?
That I may not be misunderstood, and especially that I may not be charged with misrepresentation, I will state the case for the Darwinian theory as strongly as I can. The question here is obviously not a question of power. An Omnipotent Creator has just the same capacity to make special creations, by a direct and special exertion of his will, as he has to make one primordial type and place it under fixed laws that will in their operation cause a physical organization to act in such a way as to evolve out of it other and more or less perfect types. In either method of action, he would be the same Omnipotent God, by whose will all things would exist; and I assume that upon this point there is no difference between some of the evolution school and its opponents. But in considering the question of the origin of the human soul, or the intellect of man, we are dealing not with a question of power, but with the probable method in which the conceded Omnipotent capacity has acted. On the one hand, we have the hypothesis that the Eternal and Omnipotent capacity has created a spiritual and immortal being, capable of existing without any union with the body that is formed out of earthly material, but placed for a time in unison with such a body; and that for the effectual purpose of this temporary union this body has been specially constructed, and constructed in two related forms, male and female, so that this created species of animal may perpetuate itself by certain organic laws of reproduction. Now it is obviously immaterial that we can not detect the point of time, or the process, at or by which the union between the spiritual essence and the earthly body takes place in the generation of the individual. It is conceded to be alike impossible to detect the time or mode in which descendants of the lower animals, which had nothing resembling intellect, become endowed with and inhabited by intellect, through the supposed laws of variation and natural selection, operating to produce an animal of a more elaborate organization. The point of divergence between the two hypotheses is precisely this: that the one supposes the mind of man to be a special creation, of a spiritual nature, designed to be immortal, but placed in union with a mortal body for a temporary purpose. The other hypothesis supposes no special creation of either the mind or the body of man, but maintains that the latter is evolved out of some lower animal, and that the former is evolved out of the action of physical organization.[22] Either mode of projecting and executing the creation of both the body and the mind of man is of course competent to an Omnipotent God. The question is, Which mode has the highest amount of probability on which to challenge our belief? If the one, as it is described, leads to the conclusion that the mind can not survive the body, and the other leads to the conclusion that it can, we are left to choose between them: and our choice must be determined by what we can discover of satisfactory proof that the mind of man was destined to become immortal. What, then, is the Darwinian theory of the origin of man as an animal, and to what does it lead respecting the origin and nature of the human soul?
Whoever will carefully examine Mr. Darwin's hypothesis of the descent of man as an animal, will find that commencing at a point opposite to that at which Plato began his speculations, the modern naturalist assumes the existence of a very low form of animated and organized matter, destitute of anything in the nature of reason, even if acting under what may be called instinctive and unconscious impulses, imposed upon it by the preordained laws by which animated matter is to act. By some process of generation, either bi-sexual or uni-sexual or non-sexual, this very low type of animal is endowed with a power of reproducing other individuals of the same structure and habits. In process of time, for which we must allow periods very much longer than those of which we are accustomed to think in relation to recorded history, the individuals of this species become enormously multiplied. A struggle for existence takes place between these very numerous individuals; and in this struggle there comes into operation the law to which Mr. Darwin has given the name of "natural selection," which is but another name for a series of events. He does not mean by this term to imply a conscious choice on the part of the animals, nor an active power or interfering deity. He employs it to express a constantly occurring series of events or actions, by which, in certain circumstances, animals secure themselves against the tendency to destruction which is caused by the great disparity between their numbers and the amount of food that is accessible to them, or by the unfavorable influences of a change of climate upon so great a body of individuals. He calls this series of events or actions natural selection, in order, as I understand, to compare what takes place in nature with what takes place when a breeder of animals purposely selects the most favorable individuals for the purpose of improving or varying the breed. In nature, the selection is supposed to operate as follows: The strongest and most active individuals of a species of animals have the best chance of securing the requisite amount of food from the supply that is insufficient for all. They do this by their greater fleetness in overtaking the common prey, or by making war upon the more feeble or inactive of their fellows; and numerous individuals are either directly destroyed by this warfare, or are driven off from the feeding-ground and perish for want of nourishment. Thus the best specimens of the race survive; and to this occurrence is given the name of the "survival of the fittest," meaning the survival of those individuals best fitted to continue their own existence and to continue their species. A physical change in the country inhabited by a great multitude of individuals of a certain species, or by different species—for example, a change of climate—operates to make this struggle for existence still more severe, and the result would be that those individuals of the same species which could best adapt themselves to their new condition would tend to be preserved, as would the different species inhabiting the same country which could best maintain the struggle against other species. The improvement in the structure of the animals takes place, under this process of natural selection, in the following manner: The best individuals being preserved, the organs of which they make most use in the struggle for existence undergo development and slight modifications, favorable to the preservation of the individual, and these modifications are transmitted to their offspring. Here there comes in play a kind of collateral aid to which is given the name of "sexual selection," which is defined as a form of selection depending "not on a struggle for existence in relation to other organic beings or to external conditions, but on a struggle between individuals of one sex, generally the males, for the possession of the other sex."[23] "The result," continues Mr. Darwin, "is not death to the unsuccessful competitor, but few or no offspring. Sexual selection is, therefore, less rigorous than natural selection. Generally, the most vigorous males, those which are best fitted for their place in nature, will leave most progeny. But, in many cases, victory depends not so much on general vigor, as on having special weapons, confined to the male sex." As, by means of this warfare of sexual selection, the victor would always be allowed to breed, his courage and his special weapons of offense or defense, in their increased development, would descend to his offspring. Thus the improvement and modification induced by natural selection would be enhanced and transmitted by the sexual selection.[24]
In regard to the operation of the two kinds of selection in the evolution of man from a lower form of animal, we find the theory to be this: That organic beings with peculiar habits and structure have passed through transitions which have converted the primordial animal into one of totally different habits and structure; that, in these transitions, organs adapted to one condition and mode of life have become adapted to another; that such organs are homologous, and that in their widely varied uses they have been formed by transitional gradations, so that, for example, a floating apparatus, or swim-bladder, existing in a water-animal for one purpose—flotation—has become converted in the vertebrate animals into true lungs for the very different purpose of respiration. Thus, by ordinary generation, from an ancient and unknown prototype, not only have organs, by minute and successive transitions, become adapted to changed conditions of life, but the whole organism has become changed, and this has resulted in the production of an animal vastly superior to his ancient and unknown prototype; and yet to that prototype, of which we have no specimen and no record, are to be traced the germs of all the peculiarities of structure which we find in the perfect animals of different kinds that we thoroughly know, until we come to man, these successive results being brought about by the two kinds of selection—natural and sexual.
There can be no better illustration of the character of Mr. Darwin's theory than that to which he resorts when he means to carry it to its most startling length, while he candidly admits that he has felt the difficulty of this application of it far too keenly to be surprised at the hesitation of others. This illustration is the eye. Here he very justly says it is indispensable that reason should conquer imagination; but on which side of the question reason or imagination is most employed might, perhaps, be doubtful. Mr. Darwin's hypothesis concerning the eye begins with the fact that in the highest division of the animal kingdom, the vertebrata, we can start from an eye so simple that it consists, as in the lancelet,[25] of a little sack of transparent skin, furnished with a nerve, and lined with pigment, but destitute of any other apparatus. From this prototype of a visual organ, up to the marvelous construction of the eye of man or of the eagle, he supposes that extremely slight and gradual modifications have led, by the operation of natural and sexual selection; and by way of illustrating this development, he compares the formation of the eye to the formation of the telescope. "It is scarcely possible to avoid comparing the eye with a telescope. We know that this instrument has been perfected by the long-continued efforts of the highest human intellects, and we naturally infer that the eye has been formed by a somewhat analogous process. But may not this inference be presumptuous? Have we any right to assume that the Creator works by intellectual powers like those of man? If we must compare the eye to an optical instrument, we ought, in imagination, to take a thick layer of transparent tissue, with spaces filled with fluid, and with a nerve sensitive to light beneath, and then suppose every part of this layer to be continually changing slowly in density, so as to separate into layers of different densities and thickness, placed at different distances from each other, and with the surface of each layer slowly changing in form. Further, we must suppose that there is a power, represented by natural selection or the survival of the fittest, always watching each slight alteration in the transparent layers, and carefully preserving each which, under varied circumstances, in any way or in any degree, tends to produce a distincter image. We must suppose each new state of the instrument to be multiplied by the million, each to be preserved until a better one is produced, and then the old ones to be all destroyed. In living bodies variations will cause the slight alterations, generation will multiply them almost infinitely, and natural selection will pick out with unerring skill each improvement. Let this process go on for millions of years, and during each year on millions of individuals of many kinds, and may we not believe that a living optical instrument might thus be formed as superior to one of glass as the works of the Creator are to those of man?"[26]
It might have occurred to the very learned naturalist that the formation of a mechanical instrument by the hand of man, guided by his intellect, admits of varieties of that instrument for different purposes, as products of an intelligent will. Different kinds of telescopes for different uses have been produced, not by destroying the poorer ones and preserving the better ones, but by a special and intentional adaptation of the structure to special uses, until an instrument is made which will dissolve the nebulæ of the milky way, and bring within the reach of our vision heavenly bodies of the existence of which we had no previous knowledge. Why may not the same intelligent and intentional formation of the human eye, as a special structure adapted to the special conditions of such an animal as man, have been the direct work of the Creator, just as the lowest visual organ—that of such a creature as the lancelet—was specially made for the conditions of its existence? Why resort to the theory that all the intermediate varieties of the eye have grown successively out of the lowest form of such an organ by transitional grades of which we can not trace the series, when the probabilities concerning the varieties of this organ of which we have any knowledge are so strongly on the side of a special and intentional adaptation of each one to the circumstances of the animal to which it has been given? As a question of power in the Creator, either method of action was of course just as competent as the other. As a question of which was his probable method, the case is very different; for we know comparatively very little of the modifications produced by such causes as natural or even sexual selection, while we may, without presumption, assume that we know much more about the purposes of special adaptation to special conditions, which an omnipotent Creator may have designed and effected. But this is a digression, and also an anticipation of the argument.
To state the pedigree of man according to the Darwinian theory, we must begin with an aquatic animal as the early progenitor of all the vertebrata. This animal existing, it is assumed, "in the dim obscurity of the past," was provided with branchiæ or gills, or organs for respiration in water, with the two sexes united in the same individual, but with the most important organs of the body, such as the brain and heart, imperfectly or not at all developed. From this fish-like animal, or from some of its fish descendants, there was developed an amphibious creature, with the sexes distinct. Rising from the amphibians, through a long line of diversified forms, we come to an ancient marsupial animal, an order in which the young are born in a very incomplete state of development, and carried by the mother, while sucking, in a ventral pouch.[27] From the marsupials came the quadrumana[28] and all the higher mammals.[29] Among these mammals there was, it is supposed, a hairy, tailed quadruped, probably arboreal in its habits, from which man is descended. It was an inhabitant of the Old World. It branched into the lemuridæ, a group of four-handed animals, distinct from the monkeys, and resembling the insectivorous quadrupeds in some of their characters and habits;[30] and from these came the simiadæ, of which there were two great stems—the New World and Old World monkeys. "From the latter, at a remote period, man, the wonder and glory of the universe, proceeded."[31]
The reader must now, in order to do justice to this theory, imagine a lapse of time, from the period of the existence of the aquatic progenitor of all the vertebrata, to be counted by millions of years, or by any figures that will represent to the mind the most conceivable distance between a past and a present epoch. Through this enormous stretch of centuries, in order to give scope to the operation of the laws of natural and sexual selection, we must suppose the struggle for existence to be going on among the individuals of the same species, and among different species inhabiting the same country, and the sexual selection among the individuals of the same species to be perpetually transmitting to offspring the improved and more developed organs and powers induced by natural selection; so that in the countless sequence of generations there are evolved animals that are so widely different from their remote progenitors that in classifying them we find them to be new species, endowed with a power of reproducing their own type, and similarly capable, it would seem, of still further development into even higher types in the long-distant future.
I know not how it may appear to others, but to me the parallelism between the Platonic and the Darwinian theory is very striking. Both speculators assume the existence of a Supreme Intelligence and Power, presiding over the creation of animals which are to inhabit this earth. Behind the celestial or primitive gods the Greek philosopher places the Demiurgus, to whom the gods stand in the relation of ministers or servants to execute his will. The modern naturalist assumes the existence of the Omnipotent God; and although he does not directly personify the laws of natural and sexual selection which the Omnipotent power has made to operate in nature, they perform an office in the transitional gradations through which the animals are successively developed, that very closely resembles the office performed by the gods of Plato's system in providing the modifications of structure which the animals undergo. In the two processes the one is the reversed complement of the other. Plato begins with the formation of an animal of a very exalted type, and by successive degradations, induced by the failure of the animal to live up to the high standard of its rational existence, he supposes a descent into lower and still lower forms, the gods all the while providing a new structure for each successive lower form, until we reach the shell-fish fixed on the earth beneath the water. Darwin begins with the lowest form of animated organization, and by successive gradations induced by the struggle of the animal to maintain its existence, he supposes an ascent into higher and still higher forms, the laws of natural and sexual selection operating to develop a new structure for each successive higher form, until we reach man, "the wonder and glory of the universe," an animal whose immediate ancestor was the same as the monkey's, and whose remote progenitor was an aquatic creature breathing by gills and floating by a swim-bladder.
Nor had Plato less of probability to support his theory than Darwin had to support his. The Greek philosopher might have adduced the constant spectacle of men debasing their habits and even their physical appearance into a resemblance to the brutes. He might have suggested, and he does suggest, how the degrading tendencies of the lower appetites and the ravages of disease drag down the human frame from its erect carriage and its commanding power over matter to an approximation with the condition of the inferior animals. He might have adduced innumerable proofs of the loss of reason, or rationality, through successive generations of men, brought about by the transmission of both appetites and physical malformation from parents to children. He might have compared one of his Athenian fellow-citizens of the higher class with the lowest savage known throughout all the regions accessible to an observer of his day and country. He might have portrayed the one as a being preserving his physical organization in the highest state of perfection by gymnastic exercises, by a well-chosen diet, by observance of all the conditions of health, by the aid of the highest medical skill known to the age; cultivating his mind by philosophy, practicing every public and private virtue as they were understood among a people of rare refinement, and adorning his race by an exhibition of the highest qualities that were then attainable. All these qualities, physical, mental, and moral, Plato might have shown were transmissible in some degree, and in a good degree were actually transmitted from sire to son. Turning to the other picture, and comparing "Hyperion to the satyr," he might have shown that the lowest savage, in those physical points of structure which were best adapted to his animal preservation as an inhabitant of the wildest portion of the earth, had retained those which made him more nearly resemble the brute inhabitants of the same region, and that in his intellectual and moral qualities the resemblance between him and his Athenian contemporary was almost wholly lost. Intermediate between these extreme specimens of the human race, why could not Plato have found with great probability, and often with actual proof, successive degradations of structure and uses of organs, just as well supported by facts, or analogies, or hypotheses, as are Mr. Darwin's successive elevations from a lower to a higher animal? If Plato had known as much about the animal kingdom as is now known, he could have arrayed the same facts in support of his theory, by an argument as powerful as that which now supports the doctrine of evolution.
Nay, it is certain that Plato's attention was drawn to some of these facts, and that he makes use of them in a way that is as legitimately a probable occurrence as any use that is made of them at the present day. For example, he was struck with the existence of what in scientific parlance are called "rudiments," a term that is employed to describe an organ or part which appears to have no special use where it is found in one animal, but which, in a more developed or in a diversified condition, has an obvious use in another animal. Thus, he tells us that the gods, with a long-sighted providence, introduced a sketch or rudiment of nails into the earliest organization of man, foreseeing that the lower animals would be produced from the degeneration of man, and that to them claws and nails would be absolutely indispensable.[32] In the same way, he seems to regard hair as a rudiment, relatively speaking; for while its use on different parts of the body of man, or even on the head, is not very apparent, its use to the lower animals is very obvious. Why, then, is it not just as rational, and just as much in accordance with proper scientific reasoning, to suppose those parts of animal structure which are called "rudiments" to have been introduced as mere sketches in the organization of a very high animal, and then to have been developed into special uses in lower animals produced by the degeneration of the higher, as it is to suppose that they were developed in full activity and use in the lower animals, but sank into the condition of useless or comparatively useless appendages as the higher animal was evolved out of the lower by a process of elevation? The modern naturalist of the evolution school will doubtless say that "rudiments" in the human structure, for which there is no assignable use that can be observed, are not to be accounted for as sketches from which Nature was to work, in finding for them a use in some other animal in a developed and practically important condition; that, to the extent to which such things are found in man, they are proofs of his cognate relations to the lower animals, in which they have a palpable use; and that the gradations by which they have proceeded from practical and important uses in the lower animals, until they have become mere useless or comparatively useless sketches in the human structure, are among the proofs of the descent of man from the lower animals which had a use for such things. I shall endeavor hereafter to examine the argument that is derived from "rudiments" more closely. At present, the point which I suggest to the mind of the reader arises in the parallel between the Platonic and the Darwinian theory of the origin of the different species of animals. I ask, why is it not just as probably a true hypothesis to suppose that man was first created with these rudimentary sketches in his organization, and that they became useful appendages in the lower animals, into which man became degenerated, as it is to suppose that these parts existed in full development, activity, and practical use in the lower animals, out of whom man was generated, and that in man they lost their utility and became relatively mere rudiments? To my mind, neither theory has the requisite amount of probability in its favor compared with the probability of special creations; but I can see as much probability in the Platonic as in the Darwinian explanation, and a strong parallelism between them.
I will pursue this parallel somewhat further by again adverting to Plato's idea of the origin of the human soul. He supposes it to have been an immortal being, formed out of the eternal essence of Ideas by the Demiurgus. He manifestly makes it an existence distinct from matter, because he places its first abode in a heavenly mansion, where it is in unison with the celestial harmonies and perfections of the outer circle. This heavenly sphere is again to be its abode, after it shall have been released from its temporary abode on earth, which has been appointed to it for purposes of discipline and trial. At a fixed time of birth it is brought down from its celestial abode and united with a mortal body, that it may assert and prove its power to preside over and govern that body according to the eternal laws of reason and rectitude. If it fulfills this high duty, when the fastenings, which have bound it to the mortal frame, are dissolved with the dissolution of those which hold together the material structure, the soul flies away with delight to its own peculiar star. If it fails in this high duty, it is on the death of the first body transferred by a second birth into a more degraded body, resembling that to which it has allowed the first one to be debased. At length, somewhere in the series of transmigrations, the lower and bestial tendencies cease to have power over the immortal soul; the animal with which it was last united remains an animal bereft of reason, and the soul, released from further captivity, escapes to its original abode in the heavens, more or less contaminated by what it has undergone, but still immortal, indestructible, spiritual, and capable of purification.
Here, then, we have a conception of the origin and nature of the human soul as a spiritual existence, quite as distinctly presented as it can be by human reason. Stripped of the machinery by which Plato supposes the soul to have come into existence, his conception of its origin and nature is the most remarkable contribution which philosophy, apart from the aid of what is called inspiration, has made to our means of speculating upon this great theme. Of course, it affords, with all the machinery of which Plato makes use, no explanation of the point or the time of junction between the soul and the body. But, as a conception of what in the poverty of language must be called the substance of the soul, of its spiritual and immortal nature, of its distinctive existence separate from what we know as matter, whether Plato borrowed more or less from other philosophers who preceded him, it is a very distinct presentation of the nature of the human mind.
Turn now to what can be extracted from the Darwinian theory of the origin and nature of the human mind, and observe where it holds with and where it breaks from the parallelism between it and the Platonic theory. The doctrine of evolution, so called, presents to us no distinct suggestion that the mind of man is a separate and special creation. Rejecting, and very properly rejecting, the Platonic idea of an existence of the human soul anterior to the birth of the individual, the Darwinian theory supposes that in the long course of time, during which natural and sexual selection were operating to produce higher and still higher animals, there came about, in the earlier and primitive organizations, a habit of the animal to act in a certain way; that this habit descended to offspring; that it became developed into what is now called instinct; and that instinct became developed into what we now call mind. I know not how otherwise to interpret Mr. Darwin's repeated affirmations that, in comparing the mental powers of man and those of the lower animals, there can be detected no difference in kind, but that the difference is one of degree only; that there is no fundamental difference, or difference in nature, between the mental powers of an ape and a man, or between the mental power of one of the lowest fishes, as a lamprey or lancelet, and that of one of the higher apes; that both of these intervals, that between the ape and man, and that between the lancelet and the ape, which are much wider in the latter case than in the former, are filled up by numberless gradations.[33] If this be true, it must be because the lancelet, supposing that animal to be the progenitor, formed a habit of acting by an implanted impulse, which became, under the operation of natural and sexual selection, confirmed, developed, and increased in its descendants, until it not only amounted to what is called instinct, but took on more complex habits until something akin to reason was developed. As the higher animals continued to be evolved out of the lower, this approach to a reasoning power became in the ape a true mental faculty; and, at length, in the numberless gradations of structure intermediate between the ape and the man, we reach those intellectual faculties which distinguish the latter by an enormous interval from all the other animals. "If," says Mr. Darwin, "no organic being, excepting man, had possessed any mental power, or if his powers had been of a wholly different nature from those of the lower animals, then we never should have been able to convince ourselves that our high faculties had been gradually developed. But it can be shown that there is no fundamental difference of this kind."[34]
I will not here ask how far this is theoretical assumption. I shall endeavor to examine in another place the evidence which is supposed to show that the mental powers of man are in no respect fundamentally different, or different in kind, from the powers in the other animals to which the distinguished naturalist gives the name of "mental" powers. At present I am still concerned with the parallelism between the Platonic and the Darwinian theory; and I again ask whether the latter is not the former reversed, in respect to the process by which reason in the one case becomes lost, and that by which in the other case it becomes developed out of something to which it bears no resemblance? Plato supposes the creation of pure reason, or mental power, in the shape—to use the counterpart of a physical term—of a non-physical, spiritual intelligence, or mind. It remains always of this nature, but the successive animals which it is required to inhabit on earth undergo such degradations that the immortal reason loses in them the power to control their actions; nothing is left to govern in them but mere instinct, and this at last sinks into its lowest manifestations. Darwin, on the other hand, supposes the first creation to have been a very low animal of a fish-like structure, with the lowest capacity for voluntary action of any kind, but impelled to act in a certain way by superimposed laws of self-preservation; that in the infinitude of successive generations these laws have operated to produce numberless gradations of structure, in the growth of which fixed habits have become complex instincts; that further gradations have developed these instincts into something of mental power, as the successive higher animals have become evolved out of the lower ones, until at length the intellect of man has been "gradually developed" by a purely physical process of the action of organized matter.
This materialistic way of accounting for the origin of the human mind necessarily excludes the idea of its separate creation or its distinctive character. The theory is perfectly consistent with itself, in supposing that the mind of man does not differ in kind, or differ fundamentally, from those exhibitions which in the lower animals lead us to attribute to them some mental power. But whether the theory is consistent with what we know of our own minds, as compared with what we can observe in the other animals, is the real question. In the first place, it is to be remembered that we can read our own minds, by the power of consciousness and reflection. In the next place, it is conceded that we can know nothing of the minds of the other animals, excepting by their outward actions. They can not speak, to tell us of their emotions, their memories, their fears, their hopes, their desires, what they think, or whether they think at all. They do acts which wonderfully resemble the acts of man, in outward appearance, as if they were acts which proceeded from the same power of reason but in a less perfect degree; yet they can tell us nothing of their mental processes, if they have such processes, and the utmost that we can do is to argue from their acts that they have mental faculties akin to those of men. It is in the ordained nature of things that we know and can know, by introspection, what our own minds are. We can know the mind of no other animal excepting from his outward acts. How far these will justify us in assuming that his mind is of the same nature as ours, or that ours is an advanced development of his, is the fundamental question.
Plato was evidently led, by that study of the human mind which is open to all cultivated intellects through the process of consciousness and reflection, to conceive of the soul as a created intelligence of a spiritual nature. The fanciful materials out of which he supposes it to have been composed were the mere machinery employed to express his conception of its spiritual nature and its indestructible existence. He was led to employ such machinery by his highly speculative and constructive tendencies, and because it was the habit of Greek philosophy to account for everything. Some machinery he was irresistibly impelled to employ, in order to give due consistency to his theory. But his machinery in no way obscures his conception of the nature of the soul, and we may disregard it altogether and still have left the conception of a spiritual and immortal being, formed for separate existence from matter, but united to matter for a temporary purpose of discipline and trial.
The modern naturalist, on the other hand, although assuming the existence of the Omnipotent God, supposes the human mind to have become what it is by the action of organized matter beginning at the lowest point of animal life, and going on through successive gradations of animal structure, until habits are formed which become instincts, and instincts are gradually developed into mind. Take away the machinery that is employed, and you have left no conception of the immortal and indestructible nature of the human soul. The material out of which it is constructed is all of the earth earthy, and the twofold question arises: first, whether this was the probable method employed by the Omnipotent Creator; and, secondly, whether it will account for such an existence as we have reason to believe the mind of man to be.
There is another point in the parallel between the Platonic and the Darwinian systems which is worthy of note. We have seen that, according to Plato, when the Demiurgus had completed the construction of the Kosmos and that of the human soul, he retired and left to the gods the construction of a mortal body for man and of bodies of the inferior animals into which man would become degraded. According to Darwin, the Omnipotent God constructs some very low form of animal, and then, retiring from the work of direct creation, he leaves the laws of natural and sexual selection to operate in the production of higher animals through the process that is called evolution. Perhaps it may be unscientific to ask why the Omnipotent God should cease to exercise, or refrain from exercising, his power of special creation, after he has once exerted it. Perhaps there is some view of the nature and purposes of that infinite being which would render such an abstention from his powers a probable occurrence. But it is difficult to conceive what this view can be. If we take a comprehensive survey of all the facts concerning the animal kingdom that are within the reach of our observation; and if, then, in cases where we know of no intermediate or transitional states, we assume that they must have existed; if we array the whole in support of a certain theory which undertakes to account both for what we see and for what we do not see, we very easily reach the conclusion that the Omnipotent God performed but one act of special creation, or at most performed but a very few of such acts, and those of the rudest and simplest types, and then left all the subsequent and splendid exhibitions of animal structure to be worked out by natural selection. This is the scientific method adopted by the evolution school to account for the existence of all the higher animals of which we have knowledge, man included. It may be very startling, but we must acknowledge it as the method of action of the Omnipotent God, because it is said there is no logical impossibility in it.
There is a passage in Mr. Darwin's "Origin of Species" which I must now quote, because it shows how strongly the supposed action and abstention of the infinite Creator, according to the Darwinian theory, resembles the action and abstention of Plato's Demiurgus: "Although the belief that an organ so perfect as the eye could have been formed by natural selection, is enough to stagger any one; yet in the case of any organ, if we know of a long series of gradations in complexity, each good for its possessor; then, under changing conditions of life, there is no logical impossibility in the acquirement of any conceivable degree of perfection through natural selection. In the cases in which we know of no intermediate or transitional states, we should be extremely cautious in concluding that none can have existed, for the metamorphoses of many organs show what wonderful changes in function are at least possible. For instance, a swim-bladder has apparently been converted into an air-breathing lung. The same organ having performed simultaneously very different functions, and then having been in part or in whole specialized for one function; and two distinct organs having performed at the same time the same function, the one having been perfected while aided by the other, must often have largely facilitated transitions."
Here, then, we have it propounded that after the creation of the rudest and simplest form of a visual organ, the infinite God abstains from direct and special creation of such a perfect and elaborate organ as the human eye, and leaves it to be worked out by natural selection; there being no logical impossibility, it is said, in this hypothesis. We are cautioned not to conclude, because we can not find the intermediate and transitional states of the visual organs, that they never existed; we are told that they are at least possible, and that analogies show they must have existed; and from the possibility of their existence and from the assumption that they happened, we are to believe that the Omnipotent God, refraining from the exercise of his power to create the human eye, with its wondrously perfect structure, left it to be evolved by natural selection out of the rudest and simplest visual organ which he directly fashioned.
All things are possible to an infinite Creator. He who made the visual organ of the lowest aquatic creature that ever floated could make the human eye as we know it, or could make one that would do more than the eye of man ever was capable of. He could by a direct exercise of his power of creation form the eye of man, or he could leave it to be evolved out of the only type of a visual organ on which he saw fit to exercise his creative power. He could create in the land-animals a true air-breathing lung as a special production of his will, or could permit it to be formed by transitional gradations out of the swim-bladder of an aquatic creature. But why should he abstain from the one method and employ the other? This question brings us at once to the probabilities of the case; and, in estimating those probabilities, we must take into the account all that reason permits us to believe of the attributes of the Almighty. We can not, it is true, penetrate into his counsels without the aid of revelation. But if we confine ourselves to the domain of science, or to the mere observation of nature, we shall find reason for believing that the Omnipotent God had purposes in his infinite wisdom that render the acts of special creation vastly more probable than the theory of evolution. A study of the animal kingdom and of all the phenomena of the universe leads us rationally and inevitably to one of two conclusions: either that there is no God, and that all things came by chance; or to the belief that there is a God, and that he is a being of infinite benevolence as well as infinite wisdom and power. Now, why should such a being, proposing to himself the existence on earth of such an animal as man, to be inhabited for a time by a soul destined to be immortal, abstain from the direct creation of both soul and body, and leave the latter to be evolved out of the lowest form of animal life, and the former to become a mere manifestation or exhibition of phenomena, resulting from the improved and more elaborate structures of successive types of animals? Is there no conceivable reason why an infinitely wise, benevolent, and omnipotent being should have chosen to exercise the direct power of creation in forming the soul of man for an immortal existence, and also to exercise his direct power of creation in so fashioning the body as to fit it with the utmost exactness to be serviceable and subservient to the mind which is to inhabit it for a season? Why depict the infinite God as a quiescent and retired spectator of the operation of certain laws which he has imposed upon organized matter, when there are discoverable so many manifest reasons for the special creation of such a being as man? It is hardly in accordance with any rational theory of God's providence, after we have attained a conception of such a being, to liken him intentionally or unintentionally to the Demiurgus of the acute and ingenious Greek philosopher. We must conclude that human society, with all that it has done or is capable of doing for man on earth, was in the contemplation of the Almighty; and if we adopt this conclusion, we must account for the moral sense, for moral obligation, and for the idea of law and duty. We can not account for these things upon any probable theory of their origin, if we reject the idea that they were specially implanted in the structure of the human soul, and suppose that both the intellectual faculties and the moral sense were evolved out of the struggle of lower animals for their existence, resulting in the formation of higher animals and in the development of their social instincts into more complex, refined, and consciously calculating instincts of the same nature.
I have not drawn this parallel between the Platonic and the Darwinian theories of the origin of different animals for any purpose of suggesting that the one was in any sense borrowed from the other. Plagiarism, in any form, is not, so far as I know, to be detected in the writings of the evolution school. But the speculations of Plato in regard to the origin and nature of the human soul, fanciful as they are, afford great assistance in grasping the conception of a spiritual existence; and the parallel between his process of degradation and Darwin's process of elevation shows to my mind as great probability in the one theory as there is in the other.
[CHAPTER III.]
The Darwinian pedigree of man—The evolution of organisms out of other organisms, according to the theory of Darwin.
It is doubtless an interesting speculation to go back in imagination to a period to be counted by any number of millions of years, or covered by an immeasurable lapse of time, and to conceive of slowly-moving causes by which the present or the past inhabitants of this globe became developed out of some primordial type, through successive generations, resulting in different species, which became final products and distinct organisms. But what the imagination can do in the formation of a theory when acting upon a certain range of facts is, as a matter of belief, to be tested by the inquiry whether the weight of evidence shows that theory to be, in a supreme degree, a probable truth, when compared with any other hypothesis. It is in this way that I propose to examine and test the Darwinian pedigree of man. The whole of Mr. Darwin's theory of the descent of man as an animal consists in assigning to him a certain pedigree, which traces his organism through a long series of other animals back to the lowest and crudest form of animal life; and it must be remembered that this mode of accounting for the origin of man of necessity supposes an unbroken connection of lives with lives, back through the whole series of organisms which constitute the pedigree, and that, according to the Darwinian theory, there was no aboriginal creation of any of these organisms, save the very first and lowest form with which the series commences. Not only must this connection of lives with lives be shown, but the theory must be able to show how it has come about that there are now distinct species of animals which never reproduce any type but their own.
Two great agencies, according to the Darwinian theory, have operated to develop the different species of animals from some low primordial type, through a long series which has culminated in man, who can not lay claim to be a special creation, but must trace his pedigree to some ape-like creature, and so on to the remote progenitor of all the Vertebrata. It is now needful to grasp, with as much precision as such a theory admits of, the nature and operation of these agencies, and to note the strength or weakness of the proof which they afford of the main hypothesis. First, we have what is called "the struggle for existence," which may be conceded as a fact, and to which more or less may be attributed. The term is used by Mr. Darwin in a metaphorical sense, to include all that any being has to encounter in maintaining its individual existence, and in leaving progeny, or perpetuating its kind. In the animal kingdom, the struggle for individual existence is chiefly a struggle for food among the different individuals which depend on the same food, or against a dearth of one kind of food which compels a resort to some other kind. The struggle for a continuation of its species is dependent on the success with which the individual animal maintains the contest for its own existence. Now, it is argued that in this great and complex battle for life it would occur that infinitely varied diversities of structure would be useful to the animals in helping them to carry on the battle under changing conditions. These useful diversities, consisting of the development of new organs and powers, would be preserved and perpetuated in the offspring, through many successive generations, while the variations that were injurious would be rigidly destroyed. The animals in whom these favorable individual differences and variations of structure were preserved would have the best chance of surviving and of procreating their kind. So that, by this "survival of the fittest," Nature is continually selecting those variations of structure which are useful, and continually rejecting or eliminating those which are injurious; the result being the gradual evolution of successive higher types of animals out of the lower ones, until we reach man, the highest animal organism that exists on this earth. In the next place, we have, as an auxiliary agency, in aid of natural selection, what is called "the sexual selection," by which the best endowed and most powerful males of a given species appropriate the females, and thus the progeny become possessed of those variations of structure and the superior qualities which have given to the male parent the victory over his competitors.
The proofs that are relied upon to establish the operation and effect of these agencies in producing the results that are claimed for them, ought to show that, in one or more instances, an animal of a superior organization which, when left to the natural course of its reproduction by the union of its two sexes, always produces its own distinct type and no other, has, in fact, been itself evolved out of some lower and different organism by the agencies of natural and sexual selection operating among the individuals of that lower type. One of the proofs, on which great stress is laid by Mr. Darwin, may be disposed of without difficulty. It is that which is said to take place in the breeding of domestic animals, or of animals the breeding of which man undertakes to improve for his own practical benefit, or to please his fancy, or to try experiments. In all that has been done in this kind of selection, in breeding from the best specimens of any class of animals, there is not one instance of the production of an animal varying from its near or its remote known progenitors in anything but adventitious peculiarities which will not warrant us in regarding it as a new or different animal. No breeder of horses has ever produced an animal that was not a horse. He may have brought about great and important improvements in the qualities of fleetness, or strength, or weight, or endurance, by careful selection of the sire and the dam; but the race-horse or the hunter, or the draught-horse or the war-horse, is but a horse of different qualities and powers, with the same skeleton, viscera, organs, muscles, which mark this species of animal, and with no other variations of structure than such as follow from the limited development of different parts for different uses. No breeder of cows ever produced a female animal that was not a cow, although he may have greatly improved the quality and quantity of the milk peculiar to this animal by careful selection of the individuals which he permits or encourages to breed. No breeder of sheep ever produced an animal that was not a sheep, although the quality of the fleece or of the mutton may have been greatly improved or varied. Among the domestic fowls, no animal that was not a bird was ever bred by any crossing of breeds, although great varieties of plumage, structure of beak, formation of foot, development of wing, habits of life, adaptation to changes of situation, and many minor peculiarities, have been the consequences of careful and intelligent breeding from different varieties of the same fowl. In the case of the pigeon, of which Mr. Darwin has given a great many curious facts from his own experience as a breeder, the most remarkable variations are perhaps to be observed as the results of intentional breeding from different races of that bird; but with all these variations nothing that was not a bird was ever produced. In the case of the dog, whatever was his origin, or supposing him to have been derived from the wolf, or to belong to the same family as the wolf, it is, of course, impossible to produce, by any crossing of different breeds of dogs, an animal that would not belong to the class of the Canidæ. Indeed, it is conceded by Darwin, with all the array of facts which he adduces in regard to the domesticated animals, that by crossing we can only get forms in some degree intermediate between the parents; and that although a race may be modified by occasional crosses, if aided by careful selection of the individuals which present the desired character, yet to obtain a race intermediate between two distinct races would be very difficult, if not impossible. If this is so, how much more remote must be the possibility, by any selection, or by any crossing to which Nature will allow the different animals to submit, to produce an animal of so distinct a type that it would amount to a different species from its known progenitors!
From all that has been brought about in the efforts of man to improve or to vary the breeds of domestic animals—a kind of selection that is supposed to be analogous to what takes place in Nature, although under different conditions—it is apparent that there are limitations to the power of selection in regard to the effects that are to be attributed to it. A line must be drawn somewhere. It will not do in scientific reasoning, or in any other reasoning, to ignore the limitations to which all experience and observation point with unerring certainty, so far as experience and observation furnish us with facts. It is true that the lapse of time during which there has been, with more or less success, an intentional improvement in the breeds of domestic animals carried on with recorded results has been very short when compared with the enormous period that has elapsed since the first creation of an animal organization, whenever or whatever that creation was. But history furnishes us with a pretty long stretch of time through which civilized, half-civilized, and savage nations have had to do with various animals in first taming them from a wild state and then in domesticating so as to make them subservient to human wants, and finally in improving their breeds. But there is no recorded or known instance in which there has been produced under domestication an animal which can be said to be of a different species from its immediate known progenitors, or one that differed from its remote known progenitors in any but minor and adventitious peculiarities of structure. If in passing from what has been done by human selection in the breeding of animals to what has taken place in Nature in a much longer space of time and on a far greater scale, we find that in Nature, too, there are limitations to the power of that agency which is called natural selection—that there is an impassable barrier which Nature never crosses, an invincible division between the different species of animals—we must conclude that there is a line between what selection can and what it can not do. We must conclude, with all the scope and power that can be given to natural selection, that Nature has not developed a higher and differently organized animal out of a lower and inferior type—has not made new species by the process called evolution, because the infinite God has not commissioned Nature to do that thing, but has reserved it unto himself to make special creations. Do not all that we know of the animal kingdom—all that naturalists have accumulated of facts and all that they concede to be the absence of facts—show that there is a clear and well-defined limitation to the power of natural selection, as well as to the power of that other agency which is called sexual selection? Grant that this agency of natural selection began to operate at a period, the commencement of which is as remote as figures can describe; that the struggle for life began as soon as there was an organized being existing in numbers sufficiently large to be out of proportion to the supply of food; that the sexual selection began at the same time, and that both together have been operating ever since among the different species of animals that have successively arisen and successively displaced each other throughout the earth. The longer we imagine this period to have been, the stronger is the argument against the theory of evolution, because the more numerous will be the absences of the gradations and transitions necessary to prove an unbroken descent from the remote prototype which is assumed to have been the first progenitor of the whole animal kingdom. Upon the hypothesis that evolution is a true account of the origin of the different animals, we ought practically to find no missing links in the chain. The fact is that the missing links are both extremely numerous and important; and the longer the period assumed—the further we get from the probability that these two agencies of natural and sexual selection were capable of producing the results that are claimed for them—the stronger is the proof that a barrier has been set to their operation, and the more necessary is it to recognize the line which separates what they can from what they can not do.
Let us now see what is the state of the proof. It may assist the reader to understand the Darwinian pedigree of man if I present it in a tabulated form, such as we are accustomed to use in exhibiting to the eye the pedigree of a single animal. Stated in this manner, the Darwinian pedigree of man may be traced as follows:
| I. A marine animal of the maggot form. | |
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| II. Group of lowly-organized fishes. | |
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| III. Ganoids and other fishes. | |
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| IV. The Amphibians. | |
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| V. The ancient Marsupials. | |
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| VI. The Quadrumana and all the higher mammals. | |
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| VII. The Lemuridæ. | |
| | | |
| VIII. The Simiadæ. | |
| ┌──────┴───────┐ | |
| │ | │ |
| IX. Old World Monkeys. | New World Monkeys. |
| | | |
| X. Man. | |
These ten classes or groups of animals are supposed to be connected together by intermediate diversified forms, which constitute the transitions from one of the classes or groups to the other; and in reading the table downward it must be remembered that we are reading in fact through an ascending scale of beings, from the very lowest organized creature to the highest. The whole, taken together, forms a chain of evidence; and, according to the rational rules of evidence, each distinct fact ought to be proved to have existed at some time before our belief in the main hypothesis can be challenged. I know of no reason why the probable truth of a scientific hypothesis should be judged by any other rules of determination than those which are applied to any other subject of inquiry; and, while I am ready to concede that in matters of physical science it is allowable to employ analogy in constructing a theory, it nevertheless remains, and must remain, true that where there are numerous links in a supposed chain of proofs that are established by nothing but an inference drawn from an analogous fact, the collection of supposed proofs does not exclude the probable truth of every other hypothesis but that which is sought to be established, as it also does not establish the theory in favor of which the supposed facts are adduced. Upon these principles of evidence I propose now to examine the Darwinian pedigree of man.
I. The group of marine animals described as resembling the larvæ of existing Ascidians; that is to say, an aquatic animal in the form of a grub, caterpillar, or worm, which is the first condition of an insect at its issuing from the egg. These assumed progenitors of the Vertebrata are reached, according to Mr. Darwin, by "an obscure glance into a remote antiquity," and they are described as "apparently" existing, and as "resembling" the larvæ of existing Ascidians. We are told that these animals were provided with branchiæ, or gills, for respiration in water, but with the most important organs of the body, such as the brain and heart, imperfectly or not at all developed. This simple and crude animal "we can see," it is said, "in the dim obscurity of the past," and that it "must have been the early progenitor of all the Vertebrata."[35] It is manifest that this creature is a mere hypothesis, constructed, no doubt, by the aid of analogy, but existing only in the eye of scientific imagination. Why is it placed in the water? For no reason, apparently, but that its supposed construction is made to resemble that of some creatures which have been found in the water, and because it was necessary to make it the progenitor of the next group, the lowly-organized fishes, in order to carry out the theory of the subsequent derivations. It might have existed on the land, unless at the period of its assumed existence the whole globe was covered with water. If it had existed on the land, the four subsequent forms, up to and including the Marsupials, might have been varied to suit the exigencies of the pedigree without tracing the descent of the Marsupials through fishes and the Amphibians.
II. The group of lowly-organized fishes. These are said to have been "probably" derived from the aquatic worm (I), and they are described to have been as lowly organized as the lancelet, which is a known fish of negative characters, without brain, vertebral column, or heart, presenting some affinities with the Ascidians, which are invertebrate, hermaphrodite marine creatures, permanently attached to a support, and consisting of a simple, tough, leathery sack, with two small projecting orifices. The larvæ of these creatures somewhat resemble tadpoles, and have the power of swimming freely about. These larvæ of the Ascidians are said to be, in their manner of development, related to the Vertebrata in the relative position of the nervous system, and in possessing a structure closely like the chorda dorsalis of vertebrate animals.[36] Here, again, it is apparent that a group of lowly-organized fish-like animals, of which there are no remains, have been constructed by a process of scientific reasoning from a certain class of marine creatures that are known. As a matter of pure theory, there can be no serious objection to this kind of construction, especially if it is supported by strong probabilities furnished by known facts. But when a theory requires this kind of reasoning in order to establish an important link in a chain of proofs, it is perfectly legitimate and necessary criticism that we are called upon to assume the former existence of such a link; and, indeed, the theorists themselves, with true candor and accuracy, tell us that they are arguing upon probabilities from the known to the unknown, or that a thing "must have existed" because analogies warrant the assumption that it did exist. In a matter so interesting, and in many senses important, as the evolution theory of man's descent, it is certainly none too rigid to insist on the application of the ordinary rules of belief.
III. The Ganoids and other fishes like the Lepidosiren. These, we are told, "must have been developed" from the preceding (II). The Ganoids, it is said, were fishes covered with peculiar enameled bony scales. Most of them are said to be extinct, but enough is known about them to lay the foundation for their "probable" development from the first fishes that are supposed to have been derived from the aquatic worm (I). There is a reason for arguing the existence of these first fishes as a true fish with the power of locomotion, because the next ascending group of animals is to be the Amphibians. In a fish, the swim-bladder is an important organ; and it is an organ that plays an important part in the Darwinian theory, furnishing, it is claimed, a very remarkable illustration that an organ constructed originally for one purpose, flotation, may be converted into one for a widely different purpose, namely, respiration. As the Amphibians, which as a distinct group were to come next after the fishes in the order of development, must be furnished with a true air-breathing lung, their progenitors, which inhabited the water only, must be provided with an organ that would undergo, by transitional gradations, conversion into a lung. But what is to be chiefly noted here is that it is admitted that the prototype, which was furnished with a swim-bladder, was "an ancient and unknown prototype"; and it is a mere inference that the true lungs of vertebrate animals are the swim-bladder of a fish so converted, by ordinary generation, from the unknown prototype because the swim-bladder is "homologous or 'ideally similar' in position and structure with the lungs of the higher vertebrate animals."[37] One might ask here without presumption, why the Omnipotent God should not have created in the vertebrate animals a lung for respiration, as well as have created or permitted the formation of a swim-bladder in a fish; and looking to the probabilities of the case, it is altogether too strong for the learned naturalist to assert that "there is no reason to doubt that the swim-bladder has actually been converted into lungs or an organ used exclusively for respiration"; especially as we are furnished with nothing but speculation to show the intermediate and transitionary modifications between the swim-bladder and the lung. While we may not assume "that the Creator works by intellectual powers like those of man," in all respects, it is surely not presumptuous to suppose that an Omnipotent and All-wise Being works by powers that are competent to produce anything that in his infinite purposes he may see fit specially to create.
IV. The Amphibians. Here we come to what is now a very numerous group, of which it is said that the first specimens received, among other modifications, the transformation of the swim-bladder of their fish progenitors into an air-breathing lung. We are told that from the fishes of the last preceding group (III) "a very small advance would carry us on to the Amphibians."[38] But whether the advance from an animal living in the water and incapable of existing out of that element, to an animal capable of living on the land as well as in the water, was small or large, we look in vain, at present, for the facts that constitute that advance.
V. The Ancient Marsupials. These were an order of mammals such as the existing kangaroos, opossums, etc., of which the young, born in a very incomplete state of development, are carried by the mother, while sucking, in a ventral pouch. They are supposed to have been the predecessors, at an earlier geological period, of the placental mammals, namely, the highest class of mammals, in which the embryo, after it has attained a certain stage, is united to the mother by a vascular connection called the placenta, which secures nourishment that enables the young to be born in a more complete state. There is a third and still lower division of the great mammalian series, called the Montremata, and said to be allied to the Marsupials. But the early progenitors of the existing Marsupials, classed as the Ancient Marsupials, are supposed to constitute the connection between the Amphibians and the placental mammals; that is to say, an animal which produced its young by bringing forth an egg, from which the young is hatched, became converted into an animal which produced its young from a womb and nourished it after birth from the milk supplied by its teats, the young being born in a very incomplete state of development and carried by the mother in a ventral pouch while it is sucking. The steps of variation and development by which this extraordinary change of structure, of modes of reproduction and formation of organs, as well as habits of life, took place, are certainly not yet discovered; and it is admitted, in respect to forms "now so utterly unlike," that the production of the higher forms by the process of evolution "implies the former existence of links binding closely together all these forms."[39] In other words, we are called upon to supply by general reasoning links of which we have as yet no proof.
VI. The Quadrumana and all the higher (or Placental) Mammals. These are supposed to stand between the implacental mammals (V) and the Lemuridæ (VII). The latter were a group of four-handed animals, distinct from the monkeys, and "resembling the insectivorous quadrupeds." But the gradations which would show the transformation from the implacental Marsupials to the placental Quadrumana are wanting.
VII. The Lemuridæ. This branch of the placental mammals is now actually represented by only a few varieties. The early progenitors of those which still exist are placed by Darwin in the series intermediate between the Quadrumana and the Simiadæ; and according to Huxley they were derived from the lowest, smallest, and least intelligent of the placental mammalia.
VIII. The Simiadæ. This is the general term given by naturalists to the whole group of monkeys. From the Lemuridæ to the Simiadæ we are told by Darwin that "the interval is not very wide." Be it wider or narrower, it would be satisfactory to know whether the gradations by which the former became the latter are established by anything more than general speculation.
IX. The Catarrhine, or Old-World Monkeys. These are the great stem or branch of the Simiadæ which became the progenitors of man. His immediate progenitors were "probably" a group of monkeys called by naturalists the Anthropomorphous Apes, being a group without tails or callosities, and in other respects resembling man. While this origin of man is gravely put forward and maintained with much ingenuity, we are told that "we must not fall into the error of supposing that the early progenitor of the whole Simian stock, including man, was identical with, or even closely resembled, any existing ape or monkey."[40] So that somewhere between the early progenitor of the whole Simian stock and all that we know of the monkey tribe, there were transitions and gradations and modifications produced by natural and sexual selection which we must supply as well as we can.
X. Man. We have now arrived at "the wonder and glory of the universe," and have traced his pedigree from a low form of animal, in the shape of an aquatic worm, through successive higher forms, each developed out of its predecessor by the operation of fixed laws, and without the intervention of any special act of creation anywhere in the series, whatever may have been the power and purpose by and for which existence was given to the first organized and living creature, the aquatic worm. Speaking of man as belonging, from a genealogical point of view, to the Catarrhine, or Old-World stock of monkeys, Mr. Darwin observes that "we must conclude, however much the conclusion may revolt our pride, that our early progenitors would have been properly thus designated."[41]
I have already said that our pride may be wholly laid out of consideration. The question of the probable truth of this hypothesis of man's descent should not be affected by anything but correct reasoning and the application of proper principles of belief. Treating it with absolute indifference in regard to the dignity of our race, I shall request my readers to examine the argument by which it is supported, without the smallest influence of prejudice. I am aware that it is asking a good deal to desire the reader to divest himself of all that nature and education and history and poetry and religion have contributed to produce in our feelings respecting our rank in the scale of being. When I come to treat of that which, for want of a more suitable term, must be called the substance of the human mind, and to suggest how it bears upon this question of the origin of man, I shall, as I trust, give the true, and no more than the true, scope to those considerations which lead to the comparative dignity of the race. But this dignity, as I have before observed, should follow and should not precede or accompany the discussion of the scientific problem.
What has chiefly struck me in studying the theory of evolution as an account of the origin of man is the extent to which the theory itself has influenced the array of proofs, the inconsequential character of the reasoning, and the amount of assumption which marks the whole argument. This is not said with any purpose of giving offense. What is meant by it will be fully explained and justified, and one of the chief means for its justification will be found in what I have here more than once adverted to—Mr. Darwin's own candor and accuracy in pointing out the particulars in which important proofs are wanting. Another thing by which I have been much impressed has been the repetition of what is "probable," without a sufficient weighing of the opposite probability; and sometimes this reliance on the "probable" has been carried to the verge, and even beyond the verge, of all probability. Doubtless the whole question of special creations on the one hand and of gradual evolution on the other is a question of probability. But I now refer to a habit among naturalists of asserting the probability of a fact or an occurrence, and then, without proof, placing that fact or occurrence in a chain of evidence from which the truth of their main hypothesis is to be inferred. It is creditable to them as witnesses, that they tell us that the particular fact or occurrence is only probably true, and that we are to look for proof of it hereafter. But the whole theory thus becomes an expectant one. We are to give up our belief that God made man in his own image—that he fashioned our minds and bodies after an image which he had conceived in his infinite wisdom—because we are to expect at some future time to discover the proof that he did something very different; that he formed some very lowly-organized creature, and then sat as a retired spectator of the struggle for existence, through which another and then another higher form of being would be evolved, until the mind and the body of man would both have grown out of the successive developments of organic structure. We can not see this now; we can not prove it; but we may expect to be able to see it and to prove it hereafter.
The present state of the argument does not furnish very strong grounds for the expectation of what the future is to show. As far as I can discover, the main ground on which the principle of evolution is accepted by those who believe in it, is general reasoning. It is admitted that there are breaks in the organic chain between man and his nearest supposed allies which can not be bridged over by any extinct or living species. The answer that is made to this objection seems to me a very singular specimen of reasoning. It is said that the objection will not appear of much weight to those who believe in the principle of evolution from general reasons. But how is it with those who are inquiring, and who, failing to feel the force of the "general reasons," seek to know what the facts are? When we are told that the breaks in the organic chain "depend merely on the number of related forms which have become extinct," is it asking too much to inquire how it is known that there were such forms and that they have become extinct? Geology, it is fully conceded on its highest authorities, affords us very little aid in arriving at these extinct forms which would connect man with his ape-like progenitors; for, according to Lyell, the discovery of fossil remains of all the vertebrate classes has been a very slow and fortuitous process, and this process has as yet reached no remains connecting man with some extinct ape-like creature.[42] The regions where such remains would be most likely to be found have not yet been searched by geologists. This shows the expectant character of the theory, and how much remains for the future in supplying the facts which are to take the place of "general reasons."
But perhaps the most remarkable part of the argument remains to be stated. The breaks in the organic chain of man's supposed descent are admitted to be of frequent occurrence in all parts of the series, "some being wide, sharp, and defined, others less so in various degrees."[43] But these breaks depend merely, it is said, upon the number of related forms that have become extinct, there being as yet no proof, even by fossil remains, that they once existed. Now, the prediction is that at some future time such breaks will be found still more numerous and wider, by a process of extinction that will be observed and recorded; and hence we are not to be disturbed, in looking back into the past, by finding breaks that can not be filled by anything but general reasoning. The passage in which this singular kind of reasoning is expressed by Mr. Darwin deserves to be quoted:
"At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate and replace the savage races throughout the world. At the same time the anthropomorphous apes, as Prof. Schaafhausen has remarked, will no doubt be exterminated. The break between man and his nearest allies will then be wider, for it will intervene between man in a more civilized state, as we may hope, even than the Caucasian, and some ape as low as the baboon, instead of as now between the negro or Australian and the gorilla."[44]
I do not quite comprehend how the "more civilized state of man" in the more or less remote future is to lead to this wider break. One can understand how the whole of mankind may become more civilized, and how the savage races will disappear by extermination or otherwise. It may be, and probably will be, that the anthropomorphous apes will be exterminated at the same time. But the question here is not in regard to a more perfect and widely diffused civilization—a higher and universal elevation of the intellectual and moral condition of mankind, a more improved physical and moral well-being—but it is in regard to a change in the physical and organic structure of the human animal, so marked and pronounced as to produce a wider break between man and his nearest supposed allies than that which now exists between the negro or the Australian and the gorilla. The anthropomorphous ape existing now will have disappeared; but it will be a well-known and recorded animal of the past. But what reason is there to expect that natural and sexual selection, or the advance of civilization, or the extermination of the savage races of mankind, or all such causes combined, are going to change essentially the structure of the human body to something superior to or fundamentally different from the Caucasian individual? We have had a tolerably long recorded history of the human body as it has existed in all states of civilization or barbarism. And although in the progress from barbarism to civilization—if utter barbarism preceded civilization—the development of its parts has been varied, and the brain especially has undergone a large increase in volume and in the activity of its functions, we do not find that the plan on which the human animal was constructed, however we may suppose him to have originated, has undergone any material change.
The most splendid specimen of the Caucasian race that the civilized world can show to-day has no more organs, bones, muscles, arteries, veins, or nerves than those which are found in the lowest savage. He makes a different use of them, and that use has changed their development, and to some extent has modified stature, physical, intellectual, and moral, and many other attributes; as climate and habits of life have modified complexion, the diseases to which the human frame is liable, and many other peculiarities. But if we take historic man, we find that in all the physical features of his animal construction that constitute him a species, he has been essentially the same animal in all states of civilization or barbarism; and unless we boldly assume that the prehistoric man was an animal born with a coat of hair all over his body, and that clothing was resorted to as the hair in successive generations disappeared, we can have no very strong reason for believing that the human body has been at any time an essentially different structure from what it is now. Even in regard to longevity or power of continued life, if we set aside the exceptional cases of what is related of the patriarchs in the biblical records, we do not find that the average duration of human life has been much greater or much less than the threescore and ten or the fourscore years that are said to have been the divinely appointed term. As to what may have been the average duration of life among prehistoric men, we are altogether in the dark.
I must now revert to one of the most prominent of the admitted breaks in the Darwinian pedigree, namely, that which occurs at the supposed transition from the amphibians to the mammalia. There is a term which is used in mechanics to mark the characteristic and fundamental distinction between one complex machine and another. We speak of the "principle" on which a mechanical structure operates, meaning the essential construction and mode of operation which distinguish it from other machines of the same general class. Although we are not to forget that an animal organization, to which is given that mysterious essence that is called life, may come into being by very different processes from those which are employed by man in dealing with dead matter and the forces which reside in it, yet there is no danger of being misled into false analogies, if we borrow from mechanics a convenient term, and speak of the "principle" on which an animal is constructed and on which its animal organization operates. We find, then, that in the animal kingdom there is a perfectly clear and pronounced division between the modes in which the reproductive system is constructed and by which it operates in the continuation of the species. The principle of construction and operation of the reproductive system, by which an individual animal is produced from an egg brought forth by the female parent, and is thereafter nourished without anything derived from the parental body, is as widely different from that by which the young animal is born from a womb and nourished for a time from the milk of the mother, as any two constructions, animate or inanimate, that can be conceived of. Whatever may be the analogy or resemblance between the embryo that is in the egg of one animal and the embryo that remains in the womb of another animal, at the point at which the egg is expelled from the parental system the analogy or resemblance ceases. In certain animals a body that is called an egg is formed in the female parent, containing an embryo, or fœtus, of the same species, or the substance from which a like animal is produced. This substance is inclosed in an air-tight vessel or shell; when this has been expelled from the parent the growth of the embryo goes on to the stage of development at which the young animal is to emerge from the inclosure, and, whatever may have been the process or means of nourishment surrounding the embryo within the shell and brought in that inclosure from the body of the parent, the young animal never derives, at any subsequent stage of its existence, either before or after it has left the shell, anything more from the parental system. It may be "hatched" by parental incubation or by heat from another source, but for nourishment, after it leaves the shell, the young animal is dependent on substances that are not supplied from the parental body, although they may be gathered or put within its reach by the parental care.
The transition from this system of reproduction to that by which the fœtus is formed into a greater or less degree of development within the body of the parent, and then brought forth to be nourished into further development by the parental milk, is enormous. The principle of the organic construction and mode of perpetuating the species, in the two cases, is absolutely unlike after we pass the point at which the ovule is formed by the union of the male and the female vesicles that are supposed to constitute its substance. When we pass from the implacental to the placental mammals we arrive at the crowning distinction between the two great systems of reproduction which separates them by a line that seems to forbid the idea that the one has grown out of the other by such causes as natural selection, and without a special and intentional creation of a new and different mode of operation. On the one hand, we have a system of reproduction by which the ovule is brought forth from the body of the parent in an inclosed vessel, and thereafter derives nothing from the parental body. In the other, we have the ovule developed into the fœtus within the body of the parent, and the young animal is then brought forth in a more or less complete state of development, to be nourished by the parental secretion called milk. The intervention of the placental connection between the fœtus and the mother, whereby nourishment is kept up so that the young animal may be born in a more complete state of development, is a contrivance of marvelous skill, which natural selection, or anything that can be supposed to take place in the struggle for existence, or the result of the sexual battle, seems to be entirely inadequate to account for. If two such very diverse systems could be supposed to have been the product of human contrivance, we should not hesitate to say that the principle of the one was entirely different from that of the other, and that the change evinced the highest constructive skill and a special design.
The Darwinian hypothesis is that this great transition from the one system of reproduction to the other took place between the amphibians and the ancient marsupials, by the operation of the influences of natural and sexual selection. That is to say, the system of reproduction through an egg, which is the characteristic of the amphibians, became changed by gradations and modifications into the system of the lowest mammals, the distinction between the former and the latter being an obvious and palpable one. Then we are to suppose a further change from the marsupials, or the implacental mammals, to that wonderful contrivance, the placenta, by which the mother nourishes the fœtus into a more complete state of development before the young animal is born. This enormous change of system is supposed to have been brought about by a struggle among the individuals of one species for food, aided by a struggle between the males of that species for the possession of the females, by the growth and development of organs useful to the animal in the two battles, and by the transmission of these enhanced powers and improved weapons to offspring, and possibly by the crossing of different varieties of the new animals thus produced. But what potency there could be in such causes to bring about this great change it is extremely difficult to imagine, and we must draw largely on our imaginations to reach it. It would seem that if there is any one part of animal economy that is beyond the influence of such causes as the "survival of the fittest," it is the reproductive system, by which the great divisions of the animal kingdom continue their respective forms. Give all the play that you can to the operation of the successful battle for individual life, and to the victory of the best-appointed males over their competitors for the possession of the females, and to the transmission of acquired peculiarities to offspring—when you come to such a change as that between the two systems of reproduction and perpetuation, you have to account for something which needs far more proof of the transitional gradations of structure and habits of life than can now be found between the highest of the amphibians and the lowest of the mammalia. I know not how there could be higher or stronger evidence of design, of a specially planned and intentionally elaborated construction, than is afforded by this great interval between the one reproductive system and the other. But it is time now to pass to those points of resemblance between man and the other mammals which are asserted as the decisive proofs of his and their descent from some pre-existing form, their common progenitor. These points of resemblance may be considered in the following order:
1. The Bodily Structure of Man.—He is notoriously constructed on the same general type or model as other mammals. "All the bones in his skeleton can be compared with corresponding bones in a monkey, bat, or seal. So it is with his muscles, nerves, blood-vessels, and internal viscera. The brain, the most important of all the organs, follows the same law."[45]
2. The Liability of Man to certain Diseases to which the Lower Animals are liable.—These diseases, such as hydrophobia, variola, the glanders, syphilis, cholera, etc., man both communicates to and receives from some of the lower animals. "This fact proves the close similarity of their tissues and blood, both in minute structure and composition, far more plainly than does their comparison under the best microscope or by the aid of the best chemical analysis." Monkeys are liable to many of the same non-contagious diseases as we are, such as catarrh and consumption. They suffer from apoplexy, inflammation of the bowels, and cataract in the eye. Their young die from fever when shedding their milk-teeth. Medicines produce the same effect on them as on us, and they have a strong taste for tea, coffee, spirituous liquors, and even tobacco. Man is infested with both internal and external parasites of the same genera or families as those infesting other mammals; in the case of scabies, he is infested with the same species of parasites. He is subject to the same law of lunar periods, in the process of gestation, and in the maturation and duration of certain diseases. His wounds are repaired by the same process of healing, and, after the amputation of his limbs, the stumps occasionally possess some power of regeneration, as in the lowest animals.[46]
3. The Reproductive Process.—This is strikingly the same, it is said, in all mammals, from the first act of courtship by the male to the birth and nurturing of the young.[47] The closeness of the parallel here, however, is obviously between man and the other placental mammalia, if we regard the whole process of reproduction of the different species.
4. Embryonic Development.—From the human ovule, which is said to differ in no respect from the ovule of other animals, into and through the early embryonic period, we are told that the embryo of man can hardly be distinguished from that of other members of the vertebrate kingdom. It is not necessary to repeat the details of the resemblance, which are undoubtedly striking, because they show a remarkable similarity between the embryo of man and that of the dog and the ape, in the earlier stage of the development, and that it is not until quite in the later stages of development that the three depart from each other, the difference between the young human being and the ape being not so great as that between the ape and the dog. We may, of course, accept Prof. Huxley's testimony that "the mode of origin [conception?] and the early stages of the development of man are identical with those of the animals immediately below him in the scale; without a doubt, in these respects, he is far nearer to the apes than the apes are to the dog."[48]
5. Rudiments.—This is a somewhat obscure branch of the proofs, which requires a more detailed examination in order to appreciate its bearing on the general theory of evolution. A distinction is made between rudimentary and nascent organs. The former are absolutely useless to their possessor—such as the mammæ of male quadrupeds, or the incisor teeth of ruminants, which never cut through the gums—or else they are of such slight service to their present possessors that they can not be supposed to have been developed under the conditions which now exist. These useless, or very slightly useful, organs in the human frame, are supposed to have been organs which had an important utility in the lower animals from which man is descended, but, by disuse at that period of life when the organ is chiefly used, and by inheritance at a corresponding period of life, they became of less and less utility in the successive animals that were evolved out of the preceding forms, until they sank into the condition of useless appendages, although perpetuated by force of the derivation of one species of animal from another, caused by the operation of the laws of natural and sexual selection. Nascent organs, on the other hand, are those which, though not fully developed to their entire capability, are of high service to their possessor, and may be carried to a higher degree of utility. One of the characteristics, as it is said, of rudimentary organs, is that they often become wholly suppressed in individuals, and then reappear occasionally in other individuals, through what is called reversion, or a return to ancestral peculiarities.[49] We are told that "not one of the higher animals can be named which does not bear some part in a rudimentary condition; and man forms no exception to the rule."[50]
Among the rudiments that are peculiar to man, and which are supposed to be proofs of his cognate relations to the lower animals, we are referred to certain muscles in a reduced condition, which in the other animals are used to move, twitch, or contract the skin, and remnants of which, in an efficient state, are found in various parts of our bodies; for instance, the muscles which raise the eyebrows, those which contract the scalp, those which, in some individuals, move the external ear, and similar muscular powers in different parts of the body. These are adduced as illustrations of the persistent transmission of an absolutely useless, or almost useless, faculty, "probably" derived from our remote semi-human progenitors. There is also another rudiment in man, found in the covering of the eye, and called by anatomists the "semi-lunar fold," which in birds is of great functional importance, as it can be rapidly drawn across the whole eyeball. In those animals in which, with its accessory muscles and other structures, it is well developed, as in some reptiles and amphibians, and in sharks, it is a third eyelid. In the two lower divisions of the mammalian series, the monotremata and the marsupials, and in some few of the higher mammals, as in the walrus, it is said to be fairly well developed. But in man, in the quadrumana, and most other mammals, it has become a mere rudiment.
The sense of smell in man is also classed by Darwin and other naturalists among the rudiments. It is argued that it was not originally acquired by man as he now exists, but that he has inherited this power, in an enfeebled and so far rudimentary condition, from some early progenitor, to whom it was highly serviceable, and by whom it was continually used.
Then we have the rudiment of hair, which, so far as it now exists on different parts of our body, is regarded as a mere remnant of the uniform hairy coat of the lower animals. Man, as he is now born, "differs conspicuously from all the other primates in being almost naked." But this nearly nude condition was not, it is said, the condition of his progenitors, and it is not the condition of his co-descendants from the same progenitors. At some time the progenitors of man and his co-descendants became covered all over with a coat of hair. What remains upon our bodies of this peculiar growth, that is called hair, is what was left after the agency of natural selection had worked off what was useless to the successive animals, and sexual selection had operated to transmit to offspring the absence of hair that had accrued in the nearer progenitors and the immediate parents. The illustrations which render this view "probable" do not need to be repeated, nor is it necessary to follow out the speculations concerning the mode in which our progenitors, near or remote, became varied in respect to the quantity, position, or direction of the hairs on various parts of their bodies.
There are several other alleged homologues or rudiments which are supposed to connect man with the lower animals, but which, whatever may be the resemblances, it is not necessary to discuss in detail, because there is one consideration at least which applies to the whole of this class of proofs, and to that I now pass. The three great classes of facts on which the whole argument rests, viewing man as an animal and omitting all reference to his intellect, are the resemblances of his bodily structure to that of the other mammals, the similarity between his embryonic development and theirs, and the rudiments. I reserve for separate discussion the counter-proof which may be derived from the nature of the human mind, and the special adaptation of the human structure to become the temporary residence and instrument of a spiritual and immortal being.
"It is," says Mr. Darwin, "no scientific explanation to assert that they have all [man and the other animals of the mammalian class] been formed on the same ideal plan."[51] The similarity of pattern is pronounced "utterly inexplicable" upon any other hypothesis than that all these animals are descended from a common progenitor, and that they have become what they are by subsequent adaptation to diversified conditions. I may incur some risk in undertaking to suggest what is a "scientific" explanation. Certainly I do not propose to "assert" anything. But I will endeavor to keep within the bounds of what I suppose to be science. I take that to be a scientific explanation which, embracing the important facts of natural history as the groundwork of the reasoning, undertakes to show the rationality of one hypothesis that differs from another, when the question is, Which has the greater amount of probability in its favor?
All correct reasoning on this subject of man's descent as an animal begins, I presume, with the postulate of an Infinite Creator, having under his power all the elements and forms of matter, organized and unorganized, animate and inanimate. There is no fundamental difference of opinion on this point, as I understand, between some of the evolutionists and their opponents.[52] Omnipotence, boundless choice of means and ends, illimitable wisdom, a benevolence that can not fail and can not err, are the conceded attributes of the being who is supposed to preside over the universe; and, however difficult it may be for us to express a conception of infinite power and infinite wisdom, as it is to describe infinite space and duration, we know what we mean to assume when we speak or think of faculties that are without limit, and of moral qualities that are subject to no imperfection. It is true that we have no means of forming an idea of superhuman and infinite power but by a comparison of our own limited faculties with those which we assume to belong to an eternal and infinite God. But the nature of our own limited powers teaches us that there may be powers that are as far above ours as the heavens are above the earth, as the endless realms of space stretch beyond and forever beyond any measurable distance, as eternity stretches beyond and forever beyond all measurable time. At all events, the postulate of an infinite God is the one common starting-point for the scientists of the evolution school and those who accept their doctrine, and for those who dissent from it. If I did not assume this, I could not go one step further, for without it there could not be a basis for any reasoning on the subject that would lead anywhere but to the conclusion that all that exists came by blind chance. This conclusion is rejected alike by the scientists, whose views I am now examining, and by those who differ from them.
In the economy of Nature, which is but another term for the economy of the Omnipotent Creator, there is no waste of power, as there is no abstention from the exercise of power, where its exertions are needed to accomplish an end. By this I mean that when a general plan of construction is found carried out through a variety of organizations, the rational inference is that so much power has been exerted as was needful to accomplish in each organization the objects that are common to all of them, and that no more power has been used in that direction. But where a special adaptation in some one variety of the same class of constructions is needful to accomplish an object peculiar to a new variety, the necessary amount of power never fails to be exerted. A study of the animal kingdom reveals this great truth, as palpably as a study of the products of human skill reveals the fact that man, from the imperfection of his faculties, is constantly exerting more or less power than was needful in his efforts to produce a new variety in his mechanical constructions. Experience and accumulated knowledge enable us to carry a general plan of construction through a considerable group of mechanical forms; but it is when we endeavor to vary the principle of construction so as to produce a new and special mode of operation, that we either waste power in repeating the general plan or fail to exercise the amount of power necessary to adapt the general plan to the introduction of the special object at which we are aiming. Our success in making such adaptations is often wonderful, but our failures evince that our imperfect faculties do not always enable us to accomplish the necessary adaptations of the general plan of construction to the special objects which we wish to attain. To the Infinite Creator, all such difficulties are unknown. He neither wastes power by new plans that are unnecessary, nor makes "vain repetitions," nor fails to exert the requisite amount of power and wisdom in the introduction of new and special contrivances which he ingrafts upon or superadds to the general plan, and which he has devised for the accomplishment of a new object. With a boundless choice of means and ends, with a skill that can not err, with a prescience that sees the end from the first conception of the design, he can repeat the general plan throughout any variety of constructions without any waste of power, and can introduce the new adaptations or contrivances which are to constitute a new construction, by the exercise of all the power that is required to accomplish a special object. Whether we are to suppose that he does this by the establishment of certain laws which he leaves to operate within prescribed limits, or does it by special creations proceeding from direct and specific exertions of his will, the question of his power to employ the one method or the other remains always the same. The question of which was his probable method depends upon the force of evidence; and upon this question we must allow great weight to the fact which all Nature discloses, namely, that the Creator does not waste power by making new plans of construction where an existing plan may be usefully repeated, and that he does not fail to exercise the necessary power when he wishes to add to the general plan of construction a new and special organism for a particular purpose.
Is there anything presumptuous in thus speaking of the determination and purposes of the Omnipotent Creator? We have his existence and infinite attributes conceded as the basis of all sound reasoning on his works. Why then should we not infer his purposes and his acts from his works? Why should we not attribute to him a special design, when we can not examine his works without inferring such special design, unless we conclude that the most amazing and peculiar constructions grew up under the operation of causes of which we have no sufficient proof, and in the supposed result of which there are admitted chasms that can not be bridged over?
To return now to the resemblance between the bodily structure of man and that of his supposed progenitors. The assertion is that a repetition of the same general plan of construction throughout a class of animals can only be explained upon the hypothesis of their descent from a common progenitor. They are, it is claimed, co-descendants from some one ancient animal; and however they may differ from each other, in all these co-descendants from that animal we find the same general plan of construction, the same ideal model repeated. Among the whole class of the higher mammals, we have skeletons, muscles, nerves, blood-vessels, internal viscera, organs, that closely correspond. What does this prove but that there was no waste of power, because there was no necessity in making man, for the formation of a general plan of construction different in these particulars from that which was employed in making the monkey, the bat, or the seal? The similarity of pattern between the hand of a man or a monkey, the foot of a horse, the flipper of a seal, or the wing of a bat, is pronounced "utterly inexplicable" upon any hypothesis but that of descent from a common progenitor. But why is not this sameness of ideal plan just as consistent with the hypothesis that the same ideal plan would answer for the human hand or the hand of an ape, the foot of the horse, the flipper of the seal, or the wing of the bat?[53] It is when you pass from such resemblances and come to the special contrivances which separate one animal from another by a broad line of demarkation, that you are to look for the adaptation of special contrivances to repetitions of the same ideal model through the varying species. Take, for example, the introduction among the mammals of the placental system of reproduction, parturition, and subsequent nourishment of the young, combined with the nourishment of the fœtus while it continues in the body of the mother. This system would require no material variation from the general plan of construction that is common to the different mammals of this class in respect to the parts where the resemblances are kept up throughout the series, such as those of the skeleton, muscles, nerves, viscera, and other organs that are found in all of them. But for the introduction of this peculiar system of reproduction and continuation of the species, there was needful a special and most extraordinary contrivance. If such a contrivance or anything like it had been produced by human skill, and been introduced into a mechanical structure, we should not hesitate to say that there had been an invention of a most special character. When you follow this system through the different animals in which it is found operating, and find that the period of gestation and of suckling is varied for each of them, that for each there is the necessary modification of trunk, situation of the organs, assimilation of food and formation of milk, and many other peculiarities, what are you to conclude but that there has been an adaptation of a new system to a general plan of construction, and that while the latter remains substantially the same, it has had ingrafted upon or incorporated with it a most singular contrivance, so original, comprehensive, and flexible, that its characteristic principle admits of the most exact working in animals that are as far asunder as man and the horse, or as the horse and the seal, or as the seal and the bat?
The resemblances between the embryonic development of man and the other mammals present another instance of the constantly occurring fact that there has been no waste of power on the one hand, and on the other no failure to exert the amount of power requisite to produce a new variation of the general principle. There is no more logical force in the hypothesis of a common progenitor, in order to account for these resemblances, than there is in the hypothesis that the general system of embryonic development was first devised, and that it was then varied in each distinct animal according to the requirements of its special construction. Upon the latter supposition, there would be resemblances to a certain stage, and then there would follow the departures which we have no difficulty in tracing. Upon the former supposition we should expect to find, what we actually do find, that it is very difficult, if not impossible, to assign any reason for the departures, or to suggest how it has happened that one animal is so absolutely distinct from another. Thus, to begin with the embryo itself, and to trace it through its stages of development, we find that in man it can hardly be distinguished from that of other members of the vertebrate kingdom. This we should expect to be the case after we have learned the great fact that Nature operates upon a uniform principle up to the point where variations and departures are to supervene. The system of embryonic development being devised to operate in parallel lines through all the placental mammals until the lines should begin to depart from each other so as to result in animals of different species, would necessarily show strong resemblances of structure until the departures supervened. There would be, in other words, a strong illustration of the truth that in the Divine economy there is no waste of power. But when the stage is reached at which the departures may be noted, and the lines diverge into the production of organized beings differing widely from each other, we reach an equally striking illustration of the corresponding truth that the amount of power necessary to produce very different results never fails to be put forth. There is no good reason why this latter exertion of power should not be attributed to special design just as logically and rationally as we must attribute to intentional purpose and infinite skill the general system of embryonic development which has been made for the whole class of the placental mammals. While, therefore, we may accept as a fact Prof. Huxley's statement on this branch of comparative anatomy, we are under no necessity to accept his conclusion. To the question whether man originates in a different way from a dog, bird, frog, or fish, this anatomist answers, as already quoted: "The reply is not doubtful for a moment; without question, the mode of origin and the early stages of the development of man are identical with those of the animals immediately below him in the scale; without a doubt, in these respects he is far nearer to apes than apes are to the dog." This refers, of course, to the parallelism that obtains in the early stages of the embryonic development. It necessarily implies, at later stages, diverging lines, which depart more or less from each other, and thus we have between the ape and the man a nearer approach than we have between the ape and the dog. But how does this displace, or tend to displace, the hypothesis of a general system of embryonic development for all animals of a certain class, and an intentional and special variation of that system so as to produce different species of animals? The identity between the mode of origin and the early stages of the development of man and those of the animals immediately below him in the scale, is strong proof of the applicability of the same general principle of development throughout all the animals of a certain class. The cessation of the parallelism at the diverging lines is equally strong proof of a design to create an animal differing as man does from the ape, or as the ape does from the dog. The argument that these three species are co-descendants from a common progenitor, viewing man simply as an animal, is at least no stronger than the argument which leads to the conclusion of special creations.
The same thing may be said of the liability of man to certain contagious or non-contagious diseases in common with some of the lower animals. That there is a similarity in the chemical composition of the blood of an entire class of animals, in the structure of their tissues and blood-vessels, so that they are subject to the same causes of inflammation or to the same parasites, is proof of a uniform plan of the fluids and the vascular system, or, in other words, it evinces that here, too, there has been in these respects no waste of power in forming the different animals of the same class. But trace back the supposed pedigree of the animals sharing this chemical composition of the blood, character of tissues, and vascular system, until you have passed through the amphibians and reached their supposed fish progenitors. Somewhere between the fishes and the higher mammals, you have not only a great change in the chemical composition of the blood-vessels and tissues, but an equally great change in the apparatus by which the blood is oxygenated.[54] How can these changes have been brought about without a new and intentional structure of the vessels and the apparatus for supplying the oxygen demanded for the continuation of life? How can we explain these changes by such agencies as the natural selection which is supposed to lead to the "survival of the fittest," and the sexual selection which is supposed to give to the best-appointed males of a given species the power to transmit to their offspring the new peculiarities which they have acquired through successive generations? Do not these changes show that there is a line of division which such agencies alone can not cross? Do they not clearly point to the exercise of the creative power in a special manner, and for special purposes? That power being once exercised, the new chemical composition and mechanical appliances being devised, the same "ideal plan" could be carried through a new class of animals by a repetition which is in accordance with the economy of Nature, and which an infinite power could adapt to the formation of animals, each of which was designed to perpetuate its own species and no other. Hence we should expect to find in the animals sharing in the same formation of the blood and the vascular system a corresponding process of healing the parts severed by a wound, and a continuous secretion from such vessels as have not been cut away; but we should not expect to find the stumps growing into a new and perfect part, to take the place of what has been removed by amputation.[55] We should expect to find the same drugs affecting different animals of the same class alike; and when the nervous system of a class of animals is upon the same general plan, we should expect to find them similarly affected by stimulants. But these resemblances do not militate very strongly against the hypothesis of special creations, when we consider that it is according to the universal economy of the Omnipotent Creator to employ the necessary, and no more than the necessary, power in originating a plan that may be applied to the formation of a distinct class of beings, and that his adaptations of this plan to further and specific constructions of beings belonging to a general class, but differing widely from each other, are among the strongest and plainest proofs of his infinite power and the nature of his methods.
In regard to the "rudiments" that are found in man, the theory of Mr. Darwin can be best stated in his own words: "In order to understand the existence of rudimentary organs, we have only to suppose that a former progenitor possessed the parts in question in a perfect state, and that under changed habits of life they became greatly reduced, either from simple disuse or through the natural selection of those individuals which were least encumbered with a superfluous part, aided by the other means previously indicated."[56] But, in order to do justice to this theory, it is necessary to repeat the description and operation of the supposed agencies of natural and sexual selection. Natural selection is an occurrence which takes place among the individuals of a certain species in the struggle for existence, whereby those who are best appointed secure the necessary supply of food, and the weaker or less active are either directly destroyed in the contest or perish for want of nourishment. The "fittest" having survived, they have the best chance of procreating their kind, and are likely to have the most progeny. To these individuals there comes in aid the sexual selection, which means chiefly the victory of the fittest males over their less fit competitors for the possession of the females. Whatever peculiarities of structure or development, or diminution of structure or development, these fittest males possess, they would transmit to their offspring. This tendency would be enhanced by the varying conditions of life through which the successive generations might have to pass; so that if the former progenitor possessed naturally an organ in a perfect state, but ceased to make use of it, and for thousands of generations its use went on diminishing, it would sink into the condition of a mere rudiment. Supposing this to be a partially true explanation of the modes in which organs become rudimentary, how does it militate against the idea of separate creations? We have "only to suppose" that the first men possessed, for example, the power of moving the skin all over their bodies by the contraction of certain muscles, and that their remote descendants lost it everywhere excepting in a few parts, where it remains in an efficient state, and that it has become varied in different individuals. The process by which organs become rudimentary is an hypothesis just as consistent with the separate creation of man as it is with his being a co-descendant from some lower animal whose descendants branched into men, apes, horses, seals, bats, etc.; for, on the supposition of the separate creation of all these different animals, each species might have been originally endowed with this power of muscular contraction of the skin, and in their descendants it might have been retained or varied or have become more or less rudimentary, according to its utility to the particular species. The truth is, that our own faculties of creation or construction, when we undertake to deal with matter and its properties, are so imperfect, and that which constitutes living organisms is so utterly beyond our reach, that we do not sufficiently remember how entirely it is within the compass of the infinite Power, which has given to matter all the properties that it possesses and has living organisms under its absolute control, to form a system of construction and operation for beings of entirely distinct characters, carrying it through each of them in parallel lines, or causing it to diverge into varying results with an economy that neither wastes the constructive power nor fails to exert it where it is needed. To argue that the presence of rudiments in different animals, in different comparative states of development or efficiency, or in a purely useless condition, can only be explained by a descent from some remote common progenitor, is what the logicians call a non sequitur. It overlooks the illimitable faculty of the creating Power, and disregards the great fact that such a power acts by an economy that is saving where uniformity will accomplish what is intended, that is profuse where variation is needful, and that can guide its own exertions of power, or its abstention from such exertions, by unerring wisdom, to the most varied and exact results.
I trust that by the use of the term "economy" in speaking of what is observable in the works of the Creator, I shall be understood as comprehending both the avoidance of unnecessary and the exertion of all necessary power. Of the degree of necessity in any exercise of a power which we suppose to be infinite, we can only judge by what we can see. If omnipotence and omniscience are to be predicated of the being who is supposed to preside over the universe, it is rational to conclude, from all that we can discover, that, in applying a uniform system of construction to different animals of a certain general class, he acted upon a principle that his unerring faculties enabled him to see was a comprehensive one; and that in producing variations of that system of construction that would result in adapting its uniformity to the varying conditions of the different species, he acted by the same boundless wisdom and power. If these postulates of the Divine attributes are conceded, rudiments do not by any means necessarily lead to the conclusion that all the animals of a certain class are co-descendants from some remote common progenitor, for they do not exclude the hypothesis that each distinct animal was formed upon a general plan of construction that could be applied throughout the class, but that it was varied according to the special conditions of its intended being. Organs or parts may thus have become more or less rudimentary without resorting to the supposition of a common progenitor for the whole class. That supposition, indeed, makes it necessary to assume that the infinite Creator fashioned some one animal, and then, abstaining from all work of further direct creation, left all the other animals to be evolved out of that one by the operation of secondary causes that fail even as a theory to account for what we see, and that can not be traced through any results that have yet been discovered. Wherever we pause in the ascending scale of the Darwinian descent of man, wherever we place the first special act of creative power, whether we put it at the fish-like animal of the most remote antiquity, and call that creature the original progenitor of all the vertebrata, or whether we suppose a special creation to have occurred at the introduction of the mammalian series, or anywhere else, we have to account for changes of system, new constructions, elaborately diversified forms, by the operation of agencies that were incapable of producing the results, if we are to judge of their capacity by anything that we have seen or known of their effects.
I will conclude this chapter by expressing as accurately as I can what has struck me as the excessive tendency of modern science to resolve everything into the operation of general laws, or into what we call secondary causes. I may be able to suggest nothing new upon this part of the subject, but I shall at least be able, I hope, to put my own mind in contact with that of the reader by explaining what has impressed me in the speculations of those who lay so much stress upon the potency of general laws to produce the results which we see in Nature. Of course, I do not question the great fact that the infinite Power acts by and through the uniform methods from which we are accustomed to infer what we call laws; which in physics is nothing but a deduction of regularity and system from that which we see to be perpetually and invariably happening. Now, I do not enter here into the question of the tendency of modern science to displace our religious ideas of a special Providence, by attributing everything in Nature to the operation of fixed laws of matter; or its tendency, in other words, to remove the infinite Being at a greater distance from us than that in which our religious feelings like to contemplate him. I am perfectly sensible that in truth the infinite God is just as near to us, when we regard him as acting by general laws and secondary causes, as when we believe him to be exercising a direct and special power. I am equally sensible that it is in the very nature of infinite power, wisdom, and benevolence to be able and willing to ordain uniform and fixed principles of action. That Power which gives to matter all its properties may well be supposed to have established uniformity and regularity of movements, forces, combinations, and qualities. How supremely consistent this uniformity and regularity are, with what stupendous accuracy they are kept forever in operation, we are more or less able to discern; and that benevolence which is believed to accompany the power may well be supposed to have intended that its intelligent and rational creatures should be able in some degree to discover and to avail themselves of these unvarying laws of the physical world. But are these laws to be supposed to be the only methods by which the infinite Will has ever acted? Is it to be assumed that, having settled and established these perpetual principles, on which matter, organized or unorganized, is to act, he leaves everything to their operation and abstains from all further exertion of his creative power for any special purpose? Has he given to these general laws a potency to produce, in and of themselves, all the results? In other words, has he affixed to their operation no limitations, or has he set bounds to them, and reserved to himself, by direct, specific, and occasional exercise of his will and power, for new purposes, to produce results for which the general laws were not ordained?
It is not necessary here to enter into the consideration of what are called "miracles." These, in their true meaning, are special interpositions, which the Divine Power is supposed to make, by a suspension or interruption of the established laws of Nature; and, whatever may be the grounds of our belief or our unbelief in such occurrences, they are not exercises of power such as those which are supposed to take place in special creations of new beings. That the hypothesis of special creations of new beings involves no interruption or displacement of the fixed laws of Nature, is quite manifest.
Note A.
Note on Amputation, or Severance of Parts.—As Mr. Darwin attached some importance to a fact which he asserted respecting the efforts of Nature to restore a part of an organism which has been severed by amputation, I think it well to quote his statement, and to point out what I believe to be an inaccuracy. His statement is this: "His [man's] wounds are repaired by the same process of healing, and the stumps left after the amputation of his limbs, especially during an early embryonic period, occasionally possess some power of regeneration, as in the lowest animals." It is not quite apparent what he means by amputation during an early embryonic period. If he is to be understood as referring to a case of complete severance of any part of an embryo before birth, it has not been demonstrated that such a severance has been followed by a successful effort of Nature to replace the severed part; and it is difficult to understand how there could be such an amputation during embryonic life without destroying the life of the embryo; or, if the severed part were one of the extremities, how there could be a new extremity formed. In such a case, if life continued and birth were to take place, the animal must be born in an imperfect state. In regard to amputations taking place at any time after birth, if the expression "some power of regeneration" means to imply a new formation to take the place of the severed part, the assertion is not correct. What occurs in such cases may be illustrated by the very common accident of the severance of the end of a human finger at the root of the nail. If the incision is far enough back to remove the whole of the vessels which secrete the horny substance that forms the nail, there will be no after growth of anything resembling a nail. If some of those vessels are left in the stump, there will be continuous secretion and deposit of the horny substance, which may go so far as to form a crude resemblance to a nail. But if all the vessels which constitute the means of perpetuating a perfect nail are not left in their normal number and action, there can be no such thing as the formation of a new nail. Whether it is correct to speak of the imperfect continuation of a few of the vessels to secrete the substance which it is their normal function to secrete, as a "power of regeneration," is more than doubtful, if by such a power is meant a power to make a new and complete structure to take the place of the structure that has been cut away. It is nothing more than the continued action of a few vessels, less in number than the normal system required for the continued growth and renewal of the part in question. The abortive product in such cases looks like an unsuccessful effort of Nature to make a new structure in place of the old one; but it is not in reality such an effort. The fact that the same thing occurs, in just the same way and to a corresponding extent, in different animals, has no tendency to prove anything excepting that these different animals share the same general system of secreting vessels for the formation and perpetuation of the several parts of their structures. It has no tendency to prove that they are co-descendants from a common ancestral stock, for on the hypothesis of their special and independent creation a common system of secreting vessels would be entirely consistent with their peculiar and special constructions.
[CHAPTER IV.]
The doctrine of evolution according to Herbert Spencer.
Passing from Mr. Darwin as the representative of that class of naturalists who have undertaken to assign the pedigree of man by tracing the stages of his development back to the lowest and crudest form of animal life, I now come to a philosopher whose speculations carry the doctrine of evolution through every field of inquiry, and who, finding, as he supposes, evidence of its operation throughout all the other realms of the physical and the moral word, contends that it also obtains in the animal kingdom. It were to be wished that this writer, whose intellect is of the order of minds to which we naturally look for a judicial treatment of such themes, had been a little less dogmatic in his treatment of the doctrine of special creations. Mr. Spencer has, indeed, consistently recognized the necessity of trying the question between the hypothesis of special creations and the hypothesis of evolution, as one to be decided, if it is to be decided at all, only by an examination of evidence. But to one who approaches this question in a spirit of inquiry, and with a desire to learn whatever can be said on both sides, it is somewhat disappointing to find that the most eminent writer of the evolution school is unjust in his treatment of the belief which he opposes. There can be no objection to advocacy, or to strong and decided advocacy, when settled convictions are to be vindicated. But with advocacy we may expect that kind of fairness which consists in a full recognition of the opposite argument. A great master of dialectics once laid it down as a maxim of advocacy, "State the case of your opponent as strongly as you know how, stronger if possible than he states it himself, and then answer it, if you can." Some instances in which Mr. Spencer has not followed this wise rule may now be mentioned:
1. He attacks with great vigor the hypothesis that living beings resulted from special creations, as a primitive hypothesis; and because it is a very ancient belief he pronounces it to be probably untrue. He even goes so far as to assert that its antiquity raises a presumption against it. He classes it among a family of beliefs which began in primitive ages, and which have one after another been destroyed by advancing knowledge, until this one is almost the only member of the family that survives among educated people.[57] He says that if you catechise any one who holds this belief as to the source from which he derived it, he is forced to confess that it was put into his mind in childhood, as one portion of a story which, as a whole, he has long since rejected. It will give way at last, along with all the rest of the family of beliefs which have already been given up. It may be that the arguments of those whose controversial writings on this subject Mr. Spencer had before him, relied on the antiquity of this belief as one of the strongest proofs of its probable truth. I have not looked to see how any writer on that side of the question has used the antiquity of the doctrine of special creations. But it is certainly not in accordance with the sound rule, even of advocacy, to state the argument in support of the belief which you oppose with less than the force that may be given to it, whether your opponents have or have not given to it the true force that belongs to it. The mere antiquity of the belief in special creations has this force and no more: that a belief which began in the primitive ages of mankind, and has survived through all periods of advancing knowledge, must have something to recommend it. It is not one of those things that can be swept away with contempt as a nursery-tale, originating in times of profound ignorance and handed down from generation to generation without inquiry. That it has survived, after the rejection of other beliefs that originated at the same period—survived in minds capable of dealing with the evidence in the light of increasing knowledge—is proof that it has something more to rest upon than the time of its origin. If some of its defenders now assert its antiquity as the sole or the strongest argument in its favor, its opponents should not assume that this is the only or the best argument by which it can be supported. Nor can it be summarily disposed of by classifying it as one of a family of beliefs that originated in times of ignorance, and that have mostly disappeared from the beliefs held by educated people. Its association with a special class of mistaken beliefs affords no intrinsic improbability of its truth. Every belief has come to be regarded as a mistaken or a true one, not according to its associated relations with other beliefs that have come to be regarded as unfounded, but according to the tests that the knowledge of the age has been able to apply to it. Take the whole catalogue of beliefs that began to be held in the darkest ages, and it will be found that their association has had no influence beyond inducing incorrect habits of reasoning on certain subjects, or a habit of accepting the official authority of those who claimed to be the special custodians of truth. These intellectual habits have been temporary in their influence, and have gradually changed. Every one of the beliefs that have been given up by the lettered or the unlettered part of mankind, has been given up because better knowledge of a special character has come to show that it is unfounded, and because mere official authority has ceased to have the power that it once had. If a belief has survived from a remote antiquity among those who are competent to judge of the evidence in its favor, by comparing the phenomena that increasing knowledge has accumulated, the force of the fact that it has so survived is not weakened by its association for a period with other beliefs that are now rejected.
Mr. Spencer asserts that, as the supposition of special creations is discredited by its origin in a time when men were profoundly ignorant, so conversely the supposition that races of organisms have been gradually evolved is credited by its origin, because it is a belief that has come into existence in the most instructed class, living in these better instructed times. This is a kind of argumentation that is often the result of a love of antithesis. The soundness of the last branch of the proposition appears to depend upon the soundness of the first branch. Make it to appear that the origin of the elder hypothesis is unfavorable by reason of the time of its origin, and it seems to follow that the origin of the modern hypothesis is favorable by reason of its time of origin. But this antithesis does not express the exact truth in either branch of it. It is not because of its antiquity, or of the character of the times in which it was first believed, that the doctrine of special creations can be shown to be irrational or improbable. There is no presumption against the truth of any belief, to be derived from the fact that it was held by persons who also held some erroneous beliefs on other subjects. If there were, nothing could be worthy of belief unless it could show a recent origin, or at least until demonstration of its truth had overcome the presumption against it. On the other hand, there is no presumption in favor of the truth of a new theory to be derived from the fact that it is new, or that it originated among those who think that they do not hold any erroneous beliefs, or because it originated in a comparatively very enlightened age. Every physical and every moral theory, unless we mean to be governed by mere authority, whether it is ancient or recent, must be judged by its merits, according to the evidence.
2. Another of Mr. Spencer's naked assertions is that the belief in special creations is "not countenanced by a single fact." Not only did no man "ever see a special creation," but "no one ever found indirect proof of any kind that a special creation had taken place." In support of this sweeping dogma, he adduces a habit of the naturalists who maintain special creations to locate them in some region remote from human observation.[58] This is another instance of not stating the case of your adversary as strongly as you might state it, or as he states it himself. "While no naturalist and no other person who believes in special creations ever saw one take place, indirect and circumstantial evidence tending to show that the earth is full of them has been accumulated to an enormous amount." It is a monstrous extravagance to assert that the hypothesis is "absolutely without support of any kind." What if Mr. Spencer's opponents were to retort that no man ever saw an instance in which an animal of a distinct species had been evolved out of one of an entirely different organization; that there is no external evidence to support the hypothesis of such derivations, and that the naturalists of the evolution school habitually place the scene of operations in the region of scientific imagination? The discovery of truth is not likely to be much advanced by this mode of attacking opposite opinions, yet it could be used with as much propriety on the one side of this question as on the other.
3. Next, and completing the misrepresentation, we have the assertion that, "besides being absolutely without evidence to give it external support, this hypothesis of special creations can not support itself internally—can not be framed into a coherent thought.... Immediately an attempt is made to elaborate the idea into anything like definite shape, it proves to be a pseud-idea, admitting of no definite shape. Is it supposed that a new organism when specially created is created out of nothing? If so, there is a supposed creation of matter, and the creation of matter is inconceivable, implies the establishment of a relation in thought between nothing and something—a relation of which one term is absent—an impossible relation.... Those who entertain the proposition that each kind of organism results from divine interposition do so because they refrain from translating words into thoughts. The case is one of those where men do not really believe, but believe they believe. For belief, properly so called, implies a mental representation of the thing believed; and no such mental representation is here possible."[59]
When I first read this passage I could hardly trust the evidence of my eye-sight. It seemed as if the types must have in some way misrepresented the distinguished writer; for I could scarcely conceive how a man of Mr. Spencer's reputation as a thinker could have deliberately penned and published such a specimen of logic run riot. It reads like some of the propositions propounded by the scholastics of the middle ages. But, having assured myself that the American edition of his work is a correct reprint, and having carefully pondered and endeavored to ascertain his meaning, I was forced to the conclusion that he supposes this to be a conclusive answer to the idea of absolute creation in respect to anything whatever, because, when put into a logical formula, one term of the relation is nothing, and the other term is something. Logical formulas are not always the best tests of the possibility of an intellectual conception, or of what the mind can represent to itself by thought, although to a certain class of readers or hearers they often appear to be a crushing refutation of the opposite opinion or belief against which they are employed.
Is there in truth anything impossible because it is unthinkable in the idea of absolute creation? Is the creation of matter, for example, inconceivable? It certainly is not if we adopt the postulate of an infinite Creator. That postulate is just as necessary to the evolutionist who maintains the ordination of fixed laws or systems of matter, by the operation of which the organized forms of matter have been evolved, as it is to those who maintain that these forms are special creations. Who made the laws that have been impressed upon matter? Were they made at all, or were they without any origin, self-existing and eternal? If they were made, they were made out of nothing, for nothing preceded them. Then apply to them the logical formula, and say that one term of the relation is absent—is mere nothingness—and so there is an impossible relation, a relation in thought between nothing and something, which is inconceivable. This dilemma is not escaped by asserting, as Mr. Spencer does, that "the creation of force is just as inconceivable as the creation of matter." It is necessary to inquire what he means by a "conceivable" idea. If he means that we can not trace or understand the process by which either force or matter was created, our inability may be at once conceded. But if he means that, granting the postulate of an infinite creating power, we can not conceive of the possibility that matter and all the forces that reside in it or govern it were called into being by the will of that power, the assertion is not true. Human faculties are entirely equal to the conception of an infinite creating power, whatever may be the strength or the weakness of the proof by which the existence of such a power is supported; and if there is such a power it is a contradiction in terms to assert that absolute creation, or the formation of "something" out of "nothing," is an impossible conception. Such an assertion is simply a specious play upon words, or else it involves the negation of an infinite creating power. The term "creation," as used in all modern philosophy, implies, ex vi termini, the act of causing to exist; and, unless we assume that nothing which exists was ever caused to exist, we must suppose that the causing power was alike capable of giving existence to matter and to the forces that reside in it.
The reason why the Greek philosophers did not embrace the idea of absolute creation was not because it was an unthinkable idea, or one incapable of representation in thought. They were, as we have seen, surrounded by a mythology which attributed the origin of the world to polytheistic agencies. They struggled against the cosmogony of poetical and popular traditions in an effort to find a cause of a different character. Monotheism, the conception of the one only and omnipotent God, freed philosophy from the great want which had hampered its speculations. This want was the conception of divine power, as abstracted from substance or the qualities of substance. When this conception had been obtained, absolute creation was seen to be a legitimate deduction from the illimitable scope and nature of the power which monotheism imputed to the Being supposed to preside over the universe, and to have existed before all the objects which the universe contains: and this conception of the act of creation thus became equally capable of representation in words and in thought. You may say that it has no evidence to support it; that it leads to contradictory ideas of the attributes claimed for the Creator; that upon the hypothesis of those attributes, his works are inexplicable. Whether you can say this truly or not, you can not say that absolute creation is inconceivable; and unless you mean to claim that neither matter nor force was ever created, that there never was a being competent to make either the one or the other to exist, you can not deny the probability that both were called into being by a definite and specific exercise of power. Mr. Spencer's philosophy manifestly leads to the conclusion that there is no God, or no such God as the hypothesis of special creations supposes, or such as the hypothesis of evolution necessarily calls for. If I understand him rightly, he rejects the idea of any creation, whether of matter, or force, or the properties of matter, or even of law of any kind, physical or moral. Hence it is that I admit the necessity of treating the existence of the Omnipotent Creator as an independent question to be judged upon moral evidence; and hence, too, in reasoning upon the probable methods of the Almighty, I maintain that the postulate of his existence is alike necessary to the evolutionist and to those who believe in special creations, and that both must adopt the same cardinal attributes as attributes of his power and character.
It is well to pursue this particular topic somewhat further, because this special difficulty arising from the creation of something out of nothing, triumphantly propounded by a certain class of philosophers, is echoed by others as if it concluded the question. The received meaning of language is often a great help to the mind in representing to itself in thought the idea that is expressed by the word. The word contains and suggests the thought. Lexicographers are the learned persons, one part of whose business it is to exhibit the thought that is represented by a word, not according to the popular and, perhaps, uncertain or erroneous use of the term, or according to its secondary meanings, but according to the exact correspondence between the word and the idea which it conveys in its primary and philosophic usage. The definition given to our English verb "create," in its primary and philosophical sense, is: "To produce," "to bring into being from nothing"; "to cause to exist." "Creation," as a noun expressing the act described by the verb, is defined as "the act of creating: the act of causing to exist, and especially, the act of bringing this world into existence." "Created," as the past participle which describes what has been done, is defined as "formed from nothing: caused to exist; produced; generated."[60] This is the sense in which the word is used in the English version of the first verse of the book of Genesis: "In the beginning God created the heavens and the earth"; and whatever may be said about the source from which Moses derived his knowledge of the fact which he relates, there can be no doubt about the nature of the fact which he intended to assert. Now, does the lexicographer, when he describes creation as the act of causing something to exist, or the act of producing something out of nothing, present an idea that is incapable of mental representation—a relation impossible in thought? What he means to express is clear enough. Is the idea which he expresses impossible to be conceived by the mind?
It will be a good test of this supposed insuperable difficulty to apply the term "creation" to some human act. When Shakespeare composed the tragedy of "Hamlet," he created something in the sense which we are here considering.[61] He created that something out of nothing: for he caused something to exist which did not exist before. He did not merely inscribe certain words upon paper, by the material process of writing, and afterward cause the same words to be repeated by the material process of printing upon another paper. He gave intellectual existence to certain male and female persons of his imagination, carried them through certain periods of their imaginary lives, and made them and their history an imperishable intellectual idea. It is entirely immaterial to the present discussion that such a product of the imagination presents to us nothing but intellectual ideas; that Hamlet and Ophelia, and the King and Queen, and all the rest of the dramatis personæ, were mere creatures of the poet's fancy. Although they were nothing but intellectual conceptions, they were "creations" in the sense of being intellectual products that never existed in idea before the poet made them, and therefore they were made out of nothing. Now, although we can not look into the mind of Shakespeare and describe the process by which he formed these creatures of his imagination, we experience no difficulty when we contemplate these imaginary personages, in representing in thought what we mean when we say that he "created" them. It would be simple absurdity to say that he did not create these ideal persons, because the notion of creation implies the formation of something out of nothing. That is the very meaning of creation in its primary and philosophical sense; and, when applied to works of the human imagination, it presents to us an idea that is perfectly capable of representation in thought.
Pass from this illustration of the idea of human creation to the hypothesis of a supreme being, possessing infinite power, and existing before the material universe began. The hypothesis of his existence includes the power to call into being things that had no previous being, whether these things be matter and material properties or moral and intellectual ideas. The whole realms of possible existence, spiritual and material, the whole void which consists in mere nothingness, are, according to the hypothesis, under his absolute sway. He holds the power of absolute creation; and the power this hypothesis imputes to him is no more incapable of representation in thought than is the inferior and limited power of creation, which we know to be performed by the finite human intellect, and which we have no difficulty in conceiving as a true creating faculty. When Watt formed the steam-engine, he did something more than to place certain portions of matter in certain relations, and make them to operate in a certain manner so as to produce a certain effect. He made the intellectual plan of a certain arrangement of matter; and to this act of giving being to something, both intellectual and physical, which did not exist before, we ascribe in its true sense the act of creation, and the idea we express by the term is perfectly capable of mental representation.
"Those," says Mr. Spencer, "who entertain the proposition that each kind of organism results from a divine interposition, do so because they refrain from translating words into thoughts"; and he adds, quite truly, that there is no assignable mode or conceivable way in which the making of a new organism can be described. Let this be applied to some new mechanical structure produced by the intellect and hand of man. It is a result or product of human interposition. When we describe this human product as an invention, do we refrain from translating words into thoughts because we can not describe the process of invention? or, in other words, because we can not assign the mode in which the mind of the inventor reached his conception, are we to conclude that he did not attain to the conception which is plainly embodied in the machine that stands before our eyes? If we say that he created something, do we make a statement that can not be consistently imagined because we can not assign the mode in which his mind operated when it thought out the idea and constructed the plan? We can see how he put together certain material substances, and how they operate; but we can not see or describe the mental process by which he obtained his conception. Yet we ascribe to his act, and rightly ascribe to it, the idea of creation; and the term represents a thought of the mind that is as capable of being imagined as the word is of being spoken and understood.
When Raphael painted the Sistine Madonna, he formed in his mind an image of the heaven-chosen mother of Christ, and the marvelous skill of his artist hand transferred that face of surpassing loveliness to the canvas. The story that it tells may be a fiction or a fact. The image is a reality. It was a new existence; and, if we call it a creation, do we use a word which we can not translate into thought because we do not know how the painter attained to that sweet conception of the human mother's tenderness, and the dignity of her appointed office as the handmaiden of the Lord?
There is nothing unphilosophical in thus ascribing what is done by finite human faculties and what is done by the infinite Creator to a power that is of the same nature, but which in the one being is limited and imperfect, and in the other is superhuman and boundless. If we know, as we certainly do, that weak and finite man can perform some acts of creation, can cause some things to exist that did not previously exist, how much more may we safely conclude that a being of infinite powers can call into existence, out of the primeval nothingness, objects of the most stupendous proportions, of the nicest adaptations, of the most palpable uses—can cause matter and force and law to be where before all was vacuity, where force was unknown, where law had never operated! When the mind contemplates that Omnipotent Power, it reaches forth to an awful presence; but it does not contemplate something of which it can not conceive, for its own inferior faculties teach it that creation is a possible occurrence.
We do not need to be and are not indebted to superstition, to tradition, or to deceptive words, for the idea of creation. At an immeasurable distance from the Almighty Power, we ourselves are constantly creating; and it is when we do so that our acts resemble his in their nature, however below his productions may be the productions of our poor human faculties. It is one of the proofs of our relationship to the infinite Creator, a proof for which we are not indebted solely to revelation, that we are endowed in this imperfect degree with a power that resembles his. It is also one of the chief of the characteristics that distinguish man from the other animals: for, wonderful as are the constructions made by some of them, they are uniformly made under the involuntary and uncontrollable impulse of an implanted instinct; whereas, the constructions of man are made by the exercise of a constructive faculty that is guided by his will, which enables him to effect variations of structure entirely unattainable by any other being that exists on this earth. All the other animals are confined in the exercise of their constructive faculties to an invariable model, appointed for each of them according to the circumstances of its being. The range of choice is bounded by the limitations of the instinct under which the animal is compelled to do its work. It may appear to select a favorable site for its habitation, to cull its materials with judgment, to guard against disturbance from the elements or from enemies. But we have not much reason to suppose that any of these things are done from anything but an irresistible impulse, and we certainly have no reason to suppose that the animal has the moral power to do them or to refrain from them. To man alone does there appear to have been given the power of varying his constructions by the exercise of an intelligent will; and that will is bounded only by the limitations of his power over matter: so that, in respect to material structures, the power of man to make creations approaches nearest to the power of the Almighty Creator, and is, within its limitations, a true creating power. In the realm of intellectual or ideal creations, the resemblance of human and divine power is the same, and the limitations upon the former are those fixed by the finite nature of human faculties.[62]
4. Mr. Spencer has a great deal to urge against "the current theology," and he treats of some of the theological difficulties in which those who espouse the hypothesis of special creations entangle themselves.[63] I have nothing to do with the current theology. I do not borrow from it or rely upon it, and do not undertake to disentangle its professors from any of the difficulties in which they may have involved themselves. The only question that interests me is, whether the objections propounded by this philosopher as an answer to the hypothesis of special creations present insuperable difficulties to one who does not depend upon the current theology for arguments, explanations, or means of judgment. I shall therefore endeavor to state fairly and fully the chief of the supposed difficulties, without considering the answer that is made to them by those who are taken as the representatives of the current theology.
Put into a condensed form, one of Mr. Spencer's grand objections to the belief in special creations of organized beings is that it involves a deliberate intention on the part of the Creator to produce misery, suffering, pain, and an incalculable amount of evil, or else that there was an inability to prevent these results. Omitting for the present the human race, and confining our first view to the other animals, the earth is largely peopled by creatures which inflict on each other and on themselves a vast amount of suffering. The animals are endowed with countless different pain-inflicting appliances and instincts; the earth has been a scene of warfare among all sentient creatures; and geology informs us that, from the earliest eras which it records, there has been going on this universal carnage. Throughout all past time there has been a perpetual preying of the superior upon the inferior—a ceaseless devouring of the weak by the strong. In almost every species, the number of individuals annually born is such that the majority die of starvation or by violence before arriving at maturity. But this is not all. Not only do the superior animals prey upon the inferior, for which there may be suggested some compensating benefit by the sustentation of a higher order of life through the death of the lower, or by leaving the most perfect members of a species to continue that species, but the inferior prey upon the superior, and organisms that are incapable of feeling have appliances for securing their prosperity at the expense of misery to organisms capable of happiness. Of the animal kingdom, as a whole, more than half, it is said, are parasites, and almost every known animal has its peculiar species. Passing over the evils thus inflicted on animals of inferior dignity and coming to man, we find that he is infested by animal and vegetable parasites of which two or three dozens may be distinctly enumerated; which are endowed with constitutions fitting them to live by absorbing the juices of the human body, furnished with appliances by which they root themselves in the human system, and made prolific in an almost incredible degree. They produce great suffering, sometimes cause insanity, and not infrequently death.[64]
The dilemma that is supposed to be created by these facts for those who believe in the doctrine of special creations is this: If any animals are special creations, all are so; and each animal must be supposed to have been created for the special purposes that are apparent upon an examination of its structure and mode of life. As the superior are constantly preying upon the inferior, and as there are numerous inferior animals that are constantly inflicting evil upon the superior, it results that malevolence rather than benevolence was a characteristic attribute of the creating power, or else that the power which is supposed to have created was unable to make the perfect creation which the hypothesis of infinite benevolence calls for. Infinite goodness fails to be demonstrated by a world that is full of misery, caused by special appliances to bring it about; and infinite power can not have existed, unless it comprehended the power to produce perfect and universal happiness.
I pass entirely aside from the argument which is drawn from the supposed manifestations of Almighty power in the creation of diversified forms of animal and vegetable life, because that argument leads doubtless to the inquiry whether the Almighty made these manifestations to demonstrate his power to himself, or made them to demonstrate it to his human creatures. Admitting the fact, as Mr. Spencer puts it, that millions of these demonstrations took place on earth when there were no intelligent beings to contemplate them—a statement that is said to be verified by the deductions of geology and paleontology—an inquiry into the period or the purpose of these manifestations of divine power as manifestations only, merely leads us into some of the arguments of the current theology. There is another realm of thought and reasoning into which it will be far more profitable to enter. It is that realm which lies outside of tradition and the teachings of theologians, and which takes the hypothesis of infinite power and infinite goodness, not as something which we have been taught to believe, but as a postulate of philosophical reasoning; and, applying this hypothesis to the known facts of the animal and vegetable world, endeavors to ascertain whether these facts necessarily create an insuperable difficulty in the hypothesis which lies at the basis of all sound reasoning on the subject. For I must again insist, and shall endeavor specifically to show, that this hypothesis of infinite power and goodness is equally necessary to the evolutionist and to the believer in special creations, unless all speculation on the genesis of the world is to end in blind chance, and the negation of a personal creating power of any kind.
What, then, is the true philosophical mode of dealing with the existence in the world of physical and moral evil, in reference to the hypothesis of infinite power and infinite goodness? I do not ask what is a perfect demonstration of the problem of physical and moral evil—although I think that the natural solution is very near to demonstration; but the inquiry which I now make is. What is the reasonable mode of comparing the existence of suffering, pain, misery, and their immediate agencies, with the supposition of an all-wise, all-powerful, and perfectly beneficent Creator?[65]
What we have to do, in the first place, is to contemplate the scope of infinite goodness; or, in other words, to consider that infinite benevolence is, in its very nature, guided by unerring wisdom, and consequently that its methods, its plans, and its results are as far beyond the methods, plans, and results which our imperfect benevolence would adopt or achieve, as infinite power is beyond our finite and imperfect capacity. This does not call upon us to conceive of something that is inconceivable, or that can not be represented in thought; for power and goodness are qualities that we know to exist: we know that they exist in degrees; and that what exists in a measurable and limited degree may exist without measurable limitation, or in absolute perfection. The philosophic mode of regarding perfect goodness requires us to consider its methods and results with reference to its perfect character, and not to measure them by the inferior standards of human wisdom. Following out this obvious truth, we have next to inquire whether the physical and moral evil which we see ought to destroy the very idea of an infinitely benevolent Creator, and to compel us to regard him as a malevolent being, or else to destroy our belief in his infinite power, because his power has been unable to make a world of perfect happiness and enjoyment for his creatures. If this dilemma seriously exists, it is just as great a difficulty for the hypothesis of evolution as it is for that of special creations, and it drives both schools into the utter negation of any intelligent causing power adequate to produce what we see.
In the next place, let us see what is the sum total of the physical and moral evil in the animal kingdom, which, in reference to the sum total of happiness, is supposed to create this formidable impeachment of the Almighty benevolence on the one hand, or of the Almighty power on the other. As to the order of things which permits the superior animals to prey upon the inferior, there is an explanation which lies on the surface of the facts, and which would seem to satisfy all the requirements of philosophic reasoning, whatever may be the mode in which this part of the moral problem is dealt with by theologians. We find the fact to be that, as we rise higher and higher in the scale of organized beings, the superior are capable of happiness in a greater degree than the inferior, in some proportion to the superiority of their organization. The comparative duration of life among the different animals also enters into the estimate of the sum total of happiness. As a general rule, the inferior organizations are individually more short-lived than the superior. Now, it might have pleased the Creator to cause all animals to be fed by manna from heaven, or to find their sustenance only in vegetable products; and he could thus have dispensed with the carnivorous appetite, and have rendered it unnecessary for the superior to prey upon and destroy the inferior. But, although he could thus have made a world from which the misery of this perpetual carnage would have been absent, and which would have been so far a world of perfect happiness, the fact is that this law of universal destruction is so shaped as to follow the increasing capacity for happiness and enjoyment which moves through the ascending scale of the organized beings. It also follows another obvious purpose of the carnivorous appetite and of the permission to indulge it. A large part of the whole animal kingdom is so constructed that sustentation requires animal food. The blood, the tissues, the whole substance of some animal structures require to be renewed by similar substances; and although life may sometimes be continued by the assimilation of vegetable substances alone, it is not the life for which the animal was formed, because it is not always the life which makes the full end of its being, and realizes its best capacity for enjoyment and for the continuation of its species. In some cases, the carnivorous appetite is withheld. The animal lives and thrives best upon a vegetable diet, and so far as the flesh of these animals enters into the wholesome and beneficial food of man, the animal fulfills one purpose of its existence. Some animals, before they become fit food for man, have been nourished by the substance of still other animals. In all this variety of modes in which animal food is prepared for man, and in the whole of the stupendous economy by which the superior organizations prey upon the inferior in order that each species may continue itself and may fulfill the purposes of its existence, we may without any difficulty trace an obvious reason for the permission that has been given to such destruction of individual life. When to the sum total of happiness and benefit which this permission bestows on each of the orders of the inferior animals according to its capacity for enjoyment, whether it does or does not enter into the food of man, whether it comes or never comes within the reach of his arm, we add the sum total of happiness and benefit which this law of universal destruction bestows on man, so far as he avails himself of it, we shall find no reason to impeach the Divine Goodness or to adopt a conclusion derogatory to the Infinite Power. We may dismiss the difficulty that is supposed to arise from the warfare of the superior upon the inferior beings, because that warfare, when we trace it through all its stages, involves no sort of deduction from the perfect character of the Divine Goodness or the Divine Power.
Next, we come to the liability of animals, man included, to be preyed upon by parasites, creatures of a very inferior order when compared to the animals which they infest. I have looked in vain through Mr. Spencer's speculations for any explanation which makes the existence of the parasitic animals a support to the theory of evolution without involving the same impeachment of the Divine Power or the Divine Goodness which is supposed to be involved in the hypothesis of special creations. We are indeed told that evolution brings about an increasing amount of happiness, all evils being but incidental; that, applying alike to the lowest and to the highest forms of organization, there is in all cases a progressive adaptation, and a survival of the fittest. "If," it is argued, "in the uniform working of the process, there are evolved organisms of low types, which prey on those of higher types, the evils inflicted form but a deduction from the average benefits. The universal and necessary tendency toward supremacy and multiplication of the best, applying to the organic creation as a whole as well as to each species, is ever diminishing the damage done, tends ever to maintain those most superior organizations which, in one way or another, escape the invasions of the inferior, and so tends to produce a type less liable to the invasions of the inferior. Thus the evils accompanying evolution are ever being self-eliminated."[66]
Admitting, for the argument's sake, that this is true, how does the hypothesis of evolution meet the difficulty? The parasitic inferior organizations exist, and they have existed, more or less, as long as we have known anything of the superior organizations on which they prey. They have inflicted and still inflict an incalculable amount of evil, an untold diminution of the happiness that might have been enjoyed if they had never existed. The mode in which they came into existence, whether by the process of evolution or by special creations of their respective forms, does not affect the amount of evil which their ravages have produced and are still producing. If they exist under an order of things which has made them the products of an evolving process that has formed them out of still lower types, while they exist they have the same power of inflicting evil as if they had been specially made in their respective types without the former existence of any other type. If they owe their existence to the process of evolution, they exist under a system that was designed to lead to their production by the operation of uniform laws working out a uniform process; and under this process, so long as they are produced by it, they imply gratuitous malevolence, just as truly as they do if they are supposed to have been specially created. The evils which they have inflicted and still inflict were deliberately inflicted, unless we suppose that the hypothetical process of evolution was not a system ordained by any supreme and superhuman power, but was a result of blind chance; that the system was not created, but, without the volition of any power whatever, grew out of nothing.
The compensating tendency of the evolution system to evolve superior organisms, which in one way or other "will escape the parasitic invasions," by becoming less liable to them, and so to diminish the damage done, as a sum total, finds a corresponding result in the system of special creations by a different process and at a more rapid rate. For the hypothesis of special creations, rightly regarded, does not assume the special creation of each individual animal as a miraculous or semi-miraculous interposition of divine power; and even when we apply it to the lowest types of animals it implies only the formation of that type with the power in most cases of continuing its species. Assuming the parasitic animals to be in this sense special creations, the superior organisms on which they prey during their existence may become less liable to their invasions by an infinity of causes which will diminish and finally put an end to the parasitic ravages. In the progress of medical science man may be wholly relieved from the worst and most obscure parasites that have ever infested him, without waiting for their evolution into some other type of animal that does not desire or need to prey upon the human system, or without waiting to have the human organism developed into one that will not be exposed to such causes of suffering or death. We know already that very simple precautions will ward off from man some of the most subtle of these enemies; and even in the case of animals lower than man we know that instinct teaches them how to avoid the ravages of some of the parasites to which they are exposed, even if there are others which they can not now escape.
So that, viewing as a whole the amount of misery inflicted by the inferior organisms upon the superior, and looking from the first forward to the last "syllable of recorded time," we are able upon either of the two hypotheses respecting the origin of animals to reach certain definite conclusions, which may be stated as follows: This world was not intended to be a state of unmixed and unbroken individual happiness for any of the animal organisms. Death for every individual in some form was necessary to the carrying on and the carrying out of the scheme of average enjoyment and the accomplishment of a sum total of benefit that becomes larger and larger as time goes on; and, although death without suffering might have been ordained, the moral purpose for which suffering was allowed to precede death required that it should be permitted in numberless cases and forms, and by almost numberless agencies, although not always made necessary. This great purpose can be discerned without taking into view at all the idea of a future state of existence for man or any of the other terrestrial beings, and looking only at the moral development of man individually and collectively as an agent in the promotion of happiness on this earth. Man, however he originated, stands at the head of the whole animal kingdom. If for himself and for all the inferior animal organisms death without suffering had been ordained as the universal rule, he would have been without the full strength of the moral stimulus which now leads him to relieve, to palliate, to diminish, and, as far as possible, to terminate every kind of suffering for himself and the superior organisms that are below him in the scale, which are the most capable of enjoyment and happiness, next after himself, in their various proportionate capacities. He would have had no strong motive for exterminating the inferior and noxious organisms excepting for his own individual and immediate benefit; no reason for extending the protection of his scientific acquirements to the lower animals excepting to promote his own immediate advantage. Human society would have been without that approach to moral perfection which is indicated by a tenderness for life in all its forms, where its destruction is not needed by some controlling necessity or expediency, and by the alleviation of suffering in all its forms for the sake of increasing the sum total of possible happiness. Human life itself would have been less sacred in human estimation if there had been no suffering to draw forth our sympathies and to stimulate us to the utmost contention against its evils. Civilization would have been destitute of that which is now its highest and noblest attribute. Wars would have been more frequent among the most advanced portions of the human race; pestilence would not have been encountered with half the vigor or the skill which now wage battle against it; poverty would have been left to take care of itself, or would have been alleviated from only the lowest and most selfish motives, which would have left half its evils to be aggravated by neglect. As the world has been constituted, and as we have the strongest reason to believe it will continue to the end, there is to be added to the immeasurable sum of mere animal enjoyment of life that other immeasurable sum of moral happiness which man derives from doing good and from the cultivation of his power to do it—an acquisition and accumulation of benefit which would have been wanting if there had been no physical suffering to awaken pity and to prompt our exertions for its relief.
So that the objection that the hypothesis of infinite goodness required a world where physical pain would have been unknown to any of its organisms, where human sorrow would never have been felt, where human tears would have never flowed, and where death would have been always and only euthanasia, is by no manner of means a necessary conclusion, as the existence of suffering is no impeachment of the Infinite Power. If we consider man only in the light of his rank at the head of all the terrestrial beings, and as therefore capable of the greatest amount of benefit, to himself and to the other creatures, and if we regard him individually as nothing more than a being dwelling on this earth for a short-lived existence and endowed with the power of perpetuating his species, he would have been morally an inferior being to what he is now capable of becoming, and human society would have been far below what it can be made and what we know that to a large degree it already is, if physical suffering had been excluded from the world. All this can be discerned without the aid of revelation; it can be seen by the eye of philosophic reason alone; and it is all equally true upon any hypothesis of the physical origin of man or any other living creature on this earth, unless we suppose that the whole animal kingdom came into being without any intentional design, without any plan of intentional benefit, without any purpose, and without the conscious exertion of any power of any kind.
And, if the question is asked, What is to be the end of this world? or if we go forward in imagination toward the probable end of all this animal life, I can not see that the hypothesis of evolution has more to recommend it than the hypothesis of special creations in reference to the perfectibility of the world, or to the sum of approximate perfection that seems to be attainable. As, upon either of the two hypotheses, a perfect world does not even now seem to have demanded an absence of suffering, since suffering tends obviously to produce greater benefit than could have followed from its absence, so, in the remotest conceivable future, a nearer and nearer approximation to a state of universal happiness will continue to be worked out by physical and moral causes, which will be as potent under the system of special creations as they can be supposed to be under the system of evolution. It is true that the moral causes will supplement and aid the physical under either of the two systems. But one difficulty with the evolution theory as the sole method by which the past or present inhabitants of the world have come into existence is that, so far as we can judge, it has done and completed its work just as effectually and finally as special creation appears to have terminated in certain forms, some of which are extinct and some of which are living. Take the Darwinian pedigree of man, as stated in a former chapter, or any other mode of tracing the supposed stages of animal evolution. The process has hypothetically culminated in man. At whatever species in the ascending scale you pause, you find that the particular type of animal has either become extinct or that it has continued and still continues to be produced in that same type, with only such variations and incidental differences as have resulted from changed conditions of life, and from the intermingling of different breeds of the same animal. I do not now speak of the theory, which admits, of course, of the hypothetical development of every known animal, past or present, out of its supposed predecessors. But I speak of the facts as yet revealed by the researches of naturalists among all the extinct and living forms of animal life. If there had ever been discovered any one instance in which it could be claimed by satisfactory proof that an animal of a distinct species had been evolved out of races of animals of a fundamentally different organization, and without the special interposition of any creating power operating to make a new organism, we should certainly have it cited and relied upon as a fact of the utmost importance. I do not say that it would be reasonable to expect direct and ocular demonstration of such a product, any more than it would be reasonable to expect direct and ocular demonstration of an act of special creation. But I say that it could be shown by proofs that ought to be satisfactory if there were any evidence from which the inference that such a fact ever occurred could be reasonably drawn; just as it is possible to draw the inference of special creation by reasonable deduction from the evidence that tends to establish it as a safe conclusion. But if there has ever been such an instance of the evolution of any known species of animal out of other species shown by satisfactory proof, or if we assume such an occurrence in the past as the theory calls for, what reason have we to suppose that the process of evolution is still going on, and to expect it to go on to the end of time? We must judge of the future by the past, for we have no other means of judging it. The past and the present both show, so far as we can yet perceive by the facts, that each distinct and peculiar type of animal life remains a perfect and completed production, however it was fashioned or grew into that type; and that, so far as we have any means of actual knowledge, no crosses of different races of that animal produce anything but incidental variations of structure and mode of life. It is a mere hypothesis that they produce distinct species.
Apply this to the most important of the supposed connections between different animals according to the theory of evolution—that between man and the monkey. The theory calls for the intermediate link or links. Nothing can be yet found that shows the pedigree without eking it out by general reasoning, and by assumptions that are more or less imaginary. But suppose that the chain of proof were complete, what would it show? It would show that the process of evolution has culminated in man, as its crown and summit, and has there stopped. For, whatever may have been the length of time required for the production of this result, we know what the product is. We have the history of man as an animal for a period of time that has been quite long enough to show that, after he had become in his essential structure as an animal what we know him to be, no subsequent intermingling of the races or families into which the species became divided has produced any change in his essential structure, or any new organs or any differences but differences in the development of powers which are to be found in him at all the stages of his known existence as parts of his characteristic animal structure. The period of his known existence is certainly infinitely small when compared with the whole indefinite future. It is long enough, however, to afford some basis of reasoning about the future; and, short as it is, it tends very strongly to show that the further development of man on earth is to be chiefly a moral and intellectual development; that in physical structure he is a completed type; and that whatever superiorities of mere animal life he may attain to hereafter are to be such improvements as can be worked out, within the limits of his animal constitution, by the science which his accumulating experience and knowledge will enable him to apply to the physical and moral well-being of his race.
To return now to the line of thought from which these suggestions have diverged. If, as we have every reason to believe upon either hypothesis of man's origin, he is a completed animal, standing by original creation or by the effect of the evolution process at the head of the whole animal kingdom in the apparent purpose of his existence, his agency and his power in promoting the sum of happiness on earth, for himself and all the other animals, are the same upon either hypothesis of his origin. The hypothesis of his origin by evolution gives him no greater power over his own happiness or that of the other creatures than he has if we suppose him to have been specially created; and it is only by adopting the belief that in his own constitution he is to be hereafter developed into a being incapable of suffering, or one vastly less capable of suffering than the animal called man now is, that the theory of evolution, even in regard to the sum total of happiness on earth, has any advantage over the theory of special creations. If we suppose the future gradual development of a terrestrial being standing still higher in the animal scale than man now stands, exempt from the suffering which man now suffers, we have a great amount of suffering hereafter eliminated from the world by a certain process. But how does this better satisfy the idea of infinite goodness in the power that devised the process, than the hypothesis of special creation which has formed man as an ultimate product of the divine benevolence and power acting together, endowed him with the faculty of eliminating pain and evil from the circumstances of his existence, by his own exertions, and furnished him with the strongest motives as well as with almost immeasurable means for diminishing the amount of evil for himself and all the other beings within his reach?
5. Another of the specific objections urged by Mr. Spencer against the doctrine of special creations is so put that it is manifestly directed against one of the positions assumed by the representatives of the current theology. The learned philosopher begins this part of his argument by imputing to those who assert this doctrine as their reason for maintaining it, that it "honors the Unknown Cause of things," and that they think any other doctrine amounts to an exclusion of divine power from the world. To encounter this supposed reason for maintaining the doctrine of special creations, he proceeds to ask whether the divine power "would not have been still better demonstrated by the separate creation of each individual than it is by the separate creation of each species? Why should there exist this process of natural generation? Why should not omnipotence have been proved by the supernatural production of plants and animals everywhere throughout the world from hour to hour? Is it replied that the Creator was able to make individuals arise from one another in natural selection, but not to make species thus arise? This is to assign a limit to power instead of magnifying it. Is it replied that the occasional miraculous origination of a species was practicable, but that the perpetual miraculous origination of countless individuals was impracticable? This also is a derogation. Either it was possible or not possible to create species and individuals after the same general methods. To say that it was not possible is suicidal in those who use this argument; and, if it was possible, it is required to say what end is served by the special creation of species that would not be better served by the special creation of individuals?"[67] I must again disclaim any participation in the views of those who contemplate this question with reference to the manifestations of divine power by one method of its supposed action or another, or who are influenced by the idea of honoring or dishonoring the Creator. This is not a question of the mode in which the Creator has chosen to manifest his power for the purpose of making it more impressive in the eyes of his intelligent human creatures or more palpable to their perceptions. Nor is it a question, excepting for the theologian who begins to reason upon it from a peculiar point of view, by what belief we best honor the Creator, or the power which Mr. Spencer describes as the "Unknown Cause." In the eye of philosophic reason, apart from all the religious dogmas that have been taught by human interpretations of revelation, this is a question of the probable mode in which the assumed omnipotent power has acted; and it is not a question of how we can best honor or magnify that power by believing that it has acted in one mode and not in another. We have to take, first, the postulate of an infinitely powerful Creator, whose existence is an independent inquiry, which we are to make out upon evidence that satisfies the mind. The hypothesis of his existence and attributes includes the power to create species and to establish the process of natural generation for the continuation of each species, or the power to make separate creations of each individual, as Mr. Spencer phrases it, "from hour to hour." In either mode of action, the power was the same. It is no derogation from it to suppose that the one or the other mode was adopted. It is no augmentation of it to suppose that the one was adopted instead of the other. It is simply a question of what does the evidence show, to the reasonable satisfaction of the human mind, to have been most probably the method that was chosen by a power that could adopt any method whatever. If we find that the creation of species and the establishment of the process of natural generation for the multiplication of individuals is upon the whole sustained by a predominating weight of evidence, it is safe to adopt the belief that this hypothesis of the Almighty method is in accordance with the facts. If the evidence fails to show that species have arisen from each other in the same way that individuals have arisen from each other in natural succession, we have no reason to conclude that such has been the fact. On the other hand, if the evidence shows, by reasonably satisfactory proofs, that a process has been established for the evolution of distinct species out of other and different species, similar to the process by which individuals arise from each other by natural generation, it will be safe to conclude that such has been the fact. Upon either hypothesis, the power of the Creator remains the same.
Nor is it in any degree necessary to consider in what sense the one method of action or the other was "miraculous," or that the one was an occasional and the other a perpetual exercise of power. The special creations of individuals from hour to hour would be just as miraculous as the special creation of species, and it would be occasional, although the occasions would be indefinite in number. The special creation of species would be just as miraculous as the special creation of individuals, but the occasional exercise of such a power would be limited by the number of species, each of which would be a finality in itself. The dilemma that is suggested by Mr. Spencer is a dilemma only for those who think it necessary to mingle the idea of honoring or dishonoring the Creator by one or another mode of interpreting his works, with a question of his probable method of action. His method of action is to be judged upon the evidence which a study of his works discloses.
6. Mr. Spencer, in summing up his objections to the doctrine of special creations, has said that it not only "fails to satisfy men's intellectual need of an interpretation," but that it also "fails to satisfy their moral sentiment"; that "their moral sentiment is much better satisfied by the doctrine of evolution, since that doctrine raises no contradictory implications respecting the Unknown Cause, such as are raised by the antagonist doctrine."[68] I have already suggested what seems to me a sufficient answer to the supposed contradictory implications respecting the goodness and power of the Almighty Creator. But it is here worthy of the further inquiry, What has been the influence upon the sacredness of human life, in human estimation, of a belief in any other theory of man's origin, or of no belief on the subject, compared with the effect of a belief in the doctrine that he is a creature of an Almighty Creator, formed by an exercise of infinite power for the enjoyment of greater happiness on earth than any other creature, and therefore having a peculiarly sacred individual right to the life that has been given to him? This, to be sure, does not afford a direct test of the probable truth of the hypothesis respecting his origin. But the answer to this inquiry will afford some test of the claim upon our consideration that may be put forward for any other hypothesis than the one that embraces the full idea of man's special creation, even if we do not look beyond this world. Compare, then, the civilization of the Romans at the period when it was at its highest development (the age of Julius and Augustus Cæsar), when in many respects it was a splendid civilization. Neither among the vulgar, nor among the most cultivated; not among the most accomplished of the statesmen or philosophers, was there any such belief as the simple belief in the relation between Creator and creature, such as had been held by a people who were regarded by the Romans as barbarians, in respect to man and all the other animals; or such a belief as is now held by the least educated peasant of modern Europe. One consequence of the absence of this belief, or of the want of a vivid perception of it, was that the highest persons in the Roman state, men possessed of all the culture and refinement of their age, not only furnished for the popular amusement combats of wild beasts of the most ferocious natures, but they provided gladiatorial shows in which human beings, trained for the purpose, were by each other "butchered to make a Roman holiday." The statesmen who thus catered to the popular tastes, and never thought of correcting them, subjected themselves to enormous expenses for the purpose; and all that was noble and dignified and cultured of both sexes, as well as the rabble, looked on with delight at the horrid spectacle. But this was not all. The Roman law, in many ways a code of admirable ethics, in utter disregard of the natural rights of men, left the life of the slave within the absolute power of the master, without any mitigation of the existing law of nations which made slaves of the captive in war and his posterity. Compare all this with the civilization of any modern country in which the life or liberty of man can be taken away only by judicial process and public authority, for actual crime; in which institutions exist for the relief of human suffering and for the prevention of cruelty to the inferior creatures; and then say whether the belief in special creations is not a doctrine that has worked vast good in the world, and one that should not be scouted because it is a "primitive belief."
Again, compare the ages in modern Europe when statesmen and politicians of the highest standing with entire impunity employed assassination for political ends, with periods in the same countries when assassination had come to be regarded not only with abhorrence, but as incapable of justification for any end whatever, public or private, and then say whether the world can lose its belief that man is a special creation of God, without losing one of the strongest safeguards of human life that can be derived from any belief on the subject. All these, and a great many similar considerations, while they do not prove the hypothesis of special creation, show strongly that, unlike some of the family of beliefs with which it was associated in the darkest ages, this one has worked no mischiefs; that, on the contrary, it has been producing moral, social, and political benefits in all the ages in which it has been most vividly present to the popular faith. The command, "Thou shalt do no murder," from whatever source it came, whether it was delivered to Moses on the mount of fire, or came from the teachings of Nature and the dictates of social expediency, whether it is a divine or a human law, or both, has unhappily been broken in all times, in all lands, and in all conditions of civilization. It is broken still. But it has never yet ceased, for its moral foundation and for the moral sanction of all the methods which have aimed to enforce it, to rest on the belief that man is peculiarly the child of God, whose life is sacred beyond the life of all other creatures. Whether any other belief of man's origin will afford an equally good foundation for that law, is a question which modern scientific speculation may or may not be able to answer. If its speculations conduct to the conclusion that the "unknown cause" has not specially caused anything, has not established any relation of Creator and creature, that is sufficiently special to imply divine care for the creature, we know what the answer must be. The theologian is not the only person who has occasion to examine the doctrine of evolution; it must be examined by the statesman as well.
[CHAPTER V.]
The doctrine of evolution according to Herbert Spencer further considered.
In the last preceding chapter, I have examined Mr. Spencer's chief objection to the doctrine of special creations when considered in its general aspects. I now advance to the general aspects of the evolution hypothesis as applied by this philosopher to the animal kingdom. I have already suggested the appropriate answer to the claim that the derivation of the evolution hypothesis is favorable because it has originated "among the most instructed class and in these better-instructed times," and that the derivation of the other hypothesis is unfavorable because "it originated in times of profound ignorance." On this point it is unnecessary to say more. But there is a supposed "kindred antithesis" between "the two families of beliefs" to which these two hypotheses are said respectively to belong; one of which families "has been dying out," while the other family "has been multiplying." This brings into view the peculiar philosophical system of Mr. Spencer, by which he maintains "the unity of Nature," or the prevalence of a universal law of evolution, as the law which is to be discerned in remote fields of inquiry, and which "will presently be recognized as the law of the phenomena which we are here considering," namely, the phenomena of animal life. "The discovery that evolution has gone on, and is going on, in so many departments of Nature, becomes a reason for believing that there is no department of Nature in which it does not go on."[69]
In considering this mode of generalization it is important to distinguish between the phenomena that are observable in those departments of Nature which include only dead or inanimate matter, and the phenomena that are peculiar to matter organized into living beings. Again: it is important to distinguish between phenomena which have been influenced by human agencies and those which can not have been affected by the power of man. Another distinction of the greatest consequence is that which divides the phenomena in question according to their relation to a moral purpose. In one class of phenomena, a moral purpose may be plainly discovered as the purpose of an intelligent causing power, which has chosen a particular means for the accomplishment of an end. In another class of phenomena, a moral purpose may not be discoverable as the end for which the existing arrangement of things was specially designed, and to which that arrangement was an indispensable means. By classifying the departments of Nature and observing their phenomena with these discriminations, we shall be able to judge of the value of Mr. Spencer's philosophical system when applied to the animal kingdom.
In grouping the departments and their respective phenomena as departments in which the law of evolution has obtained, and in drawing from them the sweeping deduction that there is no department in which this law has not obtained as the causa causans, Mr. Spencer does not appear to have made these necessary discriminations. He specifies the following remote fields of inquiry, in which he maintains that this law of evolution is now admitted to be the solution of the phenomena that lie in those respective fields: First, the solar system, which, as he asserts, astronomers now consider has been gradually evolved out of diffused matter.[70] Second, geological discoveries, which show that the earth has reached its present varied structure through a process of evolution. Third, society, which has progressed through a corresponding process of gradual development. "Constitutions are not made, but grow," is said to be now a recognized truth among "philosophical politicians," and a part of the more general truth that "societies are not made, but grow." Fourth, languages, which, we are told, are now believed not to have been artificially or supernaturally formed, but to have been developed. Finally, the histories of religions, philosophy, science, the fine arts, and the industrial arts, show, it is said, development "through as unobtrusive changes as those which the mind of a child passes on its way to maturity."[71]
It is obvious that in some of these departments neither human agency nor the human will and choice can have had any influence in producing the phenomena, while in some of them human agency, will, and choice have had a vast influence in making the phenomena what they are. That political constitutions or social institutions are not made, but grow, is a dogma that is by no means universally true, however wise it may sound, or with whatever confidence in a paradox it may be asserted by "some political philosophers." While past events and present exigencies may have largely shaped some political constitutions, we know that others have been deliberately modified by a choice that has had more or less of a free scope, and that sometimes this has amounted to an arbitrary decision. Languages may or may not have been a direct and supernatural gift from Heaven, but we know that their structure has been powerfully influenced by human agencies, when they have come to be written expressions of thought; for they have then received expansion by the actual coinage of new words, as well as by new meanings of old words; and even when they were in the first stages of a spoken tongue, inflections that were purely arbitrary have been introduced. So it has been with systems of religion, philosophy, the fine arts, the mechanic arts, legislation, and jurisprudence. While in all these departments changes have been going on, which upon a superficial view appear to indicate a kind of spontaneous development, when they are analyzed they are seen to have been wholly caused, or more or less influenced, by the genius, the thought, the discoveries, the exertions, and the acts of particular individuals who have had the force to impress themselves upon the age, and thus to make new systems, new beliefs, new products, new rules of social or political life, new tastes, and new habits of thinking and acting.
Again: in some of the various orders of phenomena which are found in these different departments, there is discernible a distinct moral purpose in the shape which they have been made to assume, and in others of them there is no moral purpose discoverable, which we can say required the employment of the particular means to effect the end. Thus, astronomers can not assign a moral purpose for which the distribution of the fixed stars was made to be what it is, and which purpose could not have been answered by some other arrangement. At the same time, it is easy to see that the solar system was arranged with reference to the law of universal gravitation, which made this arrangement of the different bodies essential to the harmonious working of a great and complex piece of mechanism. The present formation of the earth may have resulted just as geologists think it has, and yet they can not say that there was no moral purpose in the division of the exterior surface of our globe into land and water, seas, continents, mountains, etc. These are departments of Nature in which man has had no influence in producing the phenomena. When we turn to those departments in which man is placed as an actor, we often find an adjustment of means to an end that is so comprehensive, as well as so plain, that we may justly conclude it to have been chosen by the creating power, with the express intent that human agency should be the means by which certain effects are to be produced. For example: man is eminently a social animal. Human society is a result of his strong social propensities. He is placed in it as an actor; and in this arrangement there is discoverable a moral purpose so plain that we may rightfully regard the social phenomena of mutual protection and improvement as proofs that society was ordained as the sphere of man's highest development on earth.
So that, in reasoning about the phenomena of any of the departments of Nature as affording indications of the so-called universal law of evolution, we must not forget the distinction between organized inanimate and organized animated matter; or the distinction between those departments in which human will or choice, or the human intellect, has had no influence in shaping the phenomena, and those in which they have had great influence; or the distinction between phenomena in which a special moral purpose can be and those in which it can not be discovered, as the reason for the existing order of things. It is especially hazardous to argue that because a spontaneous development, or a gradual evolution, can be traced in some of the phenomena of inanimate matter, it therefore must obtain in the animal kingdom. It is alike hazardous to argue, because there has been what is called evolution in some departments of Nature over which man has had no control, that the same law obtains in other departments over which he has also had no control, or those in which he has had a large control.
The bearing of these discriminations upon the supposed universality of the law of evolution may now be seen if we attend to the further inquiry whether that law obtains throughout all the phenomena of any one department of Nature as the sole cause of the phenomena in that department. Take again, for example, the solar system. Suppose it to be true that the bodies which compose it, the sun and the planetary spheres, were gradually evolved out of diffused matter. Does it necessarily follow that their existing arrangements and mutual relations were not specially designed? That their orbits, their revolutions, their distances from each other, were not specially planned? That they were not hung in their respective positions with an intentional adjustment to the great force of gravitation that was prevailing throughout the universe? Must we suppose that all this part of the whole phenomena of the solar system resulted from the operation of an ungoverned evolution, because the bodies themselves may have been gradually formed out of diffused matter into their present condition without being spoken at once into that condition by the fiat of the Almighty? We can certainly see that the existing arrangements must have been intentional; and, if intentional, the intention must have taken effect in the production of the phenomena exhibited by the arrangement, as any design takes effect in the production of the phenomena which are open to our observation. The moral purpose evinced by one part of this arrangement, the alternation of day and night upon the earth, for example, might have been effected by some other means than the means which now produce it. But there is the strongest evidence that a certain means was chosen and intentionally put into operation; and although we can not tell why that means was preferred, the fact that it was both designed and preferred makes it a special creation. To suppose that it was left to be worked out by a process such as the hypothesis of evolution assumes, by the gradual, fortuitous, and ungoverned operation of infinitely slow-moving causes, which might have made the adjustments very different from what they are, is to deprive it of the element of intentional preference that is proved by its existence. The hypothesis of evolution, when applied to all the phenomena of the solar system, relegates one great branch of those phenomena to a realm from which all special purposes and all direct design are absent, and confines the explanation of the phenomena to the operation of causes that might have brought about very different arrangements. That this supposed process of evolution has, in fact, been followed by the existing arrangements of the solar system, does not prove, or tend to prove, that the existing arrangements are solely due to the supposed method of their production; for we can not leave out the element of some design, and if there was a design, the very nature of the system required that the design should be executed by a special creation of a plan for the mutual relations of the bodies composing it. The bodies themselves might have been gradually formed out of diffused matter, floating loosely in the realms of space. The relations of the bodies to each other required the act of an intelligent will, in the direct formation of an intentional plan; and that act was an act of special creation in the same sense in which the structural plan of a species of animal was a special creation.
Here, then, is one department of Nature in which it is not necessary and not philosophical to assume that the law of so-called evolution has been the universal law to which all the phenomena of that department are to be attributed. If we follow out the same inquiry in other departments of Nature remote from the animal kingdom, we shall find reason to adopt the same conclusion in respect to their phenomena. Thus, let us for a moment contemplate another of the departments in which inanimate matter is the subject of observation, and in which human will or intelligence has had no agency in producing the phenomena, namely, the formation of the present structure of the earth as it is described by geologists. This is a department in which the hypothesis of evolution finds perhaps its stronghold. Yet it is necessary even here to recognize an intentional plan and direct design in some part of the phenomena. Let us suppose that during the period required by any of the speculations of geologists, however long, a mass of matter was gathered in an unformed condition, and gradually shaped into the present condition of the earth by the action of its constituent elements upon each other, influenced by the laws of mechanical forces, of chemical combinations, of light and heat, and of whatever physical agencies were made to operate in the process of evolving the mass into the condition in which it has been known to us for a certain time. Is it a rational conclusion that the intelligent power which put these forces in operation—an hypothesis with which we must begin to reason, or leave the origin of both matter and forces to blind chance—did not guide their operation at all to the intentional production of the results which we see? The results disclose some manifest purposes; and although these purposes, or others equally beneficent, might have been accomplished by different arrangements, we can see that they have been effected by a certain arrangement of a specific character. The results have been continents, seas, mountains, rivers, lakes, formation and distribution of minerals, growth of forests, and an almost innumerable, and certainly a very varied, catalogue of phenomena, physical formations, and adaptations. All these varied results disclose a plan by which this earth became a marvelously convenient abode for the living creatures that have inhabited or still inhabit it, especially for man. The formation of this plan was an intelligent act, if we suppose that any intelligent being projected the original gathering of the crude primordial matter and subjected it to the operation of the forces employed to shape it into its present condition. This plan was an act of special creation, in the same sense in which the plan of a particular animal organism may have been a special creation. While, therefore, a process which may be called evolution may have operated as the agency through which the earth has reached its present physical condition, the plan of that condition was certainly not formed by any such process; for it was, if it was the product of anything, the product of an intelligent will operating in the production of preconceived results by the exercise of superhuman and infinite wisdom and foresight.
When we turn to a department in which human influence has largely or wholly shaped the phenomena, we find numerous special creations that are not attributable to the operation of any law of development or evolution such as is supposed to have led to the production of one species of animal out of another, or out of several previous species. In short, a survey of all the departments of Nature leads to the conclusion that while there may be phenomena which are properly traceable to the operation of the forces of Nature, or to fixed general systems of production, there is another very large class of the phenomena which owe their existence to special acts of an intelligent will, finite or infinite, human or divine, according as their production required superhuman power or admitted of the efficacy of man's intervention.
The way is now somewhat cleared for an examination of Mr. Spencer's application of the law of evolution to the gradual formation of different species of animals out of one or more previous species, without any act of special creation intervening anywhere in the series. We have seen that this alleged law is not of universal force as the cause of all the phenomena in all the departments of Nature. When we come to apply it as the hypothesis which is to account for the existence of different species of animals of very different types, we must remember that we are dealing with organisms endowed with life, and, although we can not sufficiently explain what life is, we know that animated organisms are brought into being by systems of production that are widely different from the modes in which inanimate matter may have been or has been made to assume its existing forms. Bearing this in mind, we come to the arguments and proofs by which Mr. Spencer maintains the immense superiority of the evolution hypothesis over that of special creations, in reference to the animal kingdom. It must be remembered that this is a department in which man can have had no agency in producing the phenomena, for whatever may have been the slight variations produced by human interference with the breeding of animals domesticated from their wild condition, we must investigate the origin of species as if there had never been any human intervention in the crossing of breeds, because that origin is to be looked for in a sphere entirely removed from all human interference. Man himself is included in the investigation, and we must make that investigation in reference to a time when he did not exist, or when he did not exist as we now know him.
One of the favorite methods of Mr. Spencer consists in arraying difficulties for the believers in special creations, which, he argues, can not be encountered by their hypothesis, and then arguing that there are no difficulties in the way of the hypothesis of evolution. His position shall be stated with all the strength that he gives to it, and with all the care that I can bestow upon its treatment. He puts the argument thus: In the animal kingdom individuals come into being by a process of generation—that is to say, they arise out of other individuals of the same species. If we contemplate the individuals of any species, we find an evolution repeated in every one of them by a uniform process of development, which, in a short space of time, produces a series of astonishing changes. The seed becomes a tree, and the tree differs from the seed immeasurably in bulk, structure, color, form, specific gravity, and chemical composition; so that no visible resemblance can be pointed out between them. The small, semi-transparent gelatinous spherule constituting the human ovum becomes the newly-born child; and this human infant "is so complex in its structure that a cyclopædia is needed to describe its constituent parts. The germinal vesicle is so simple that it may be defined in a line. Nevertheless, a few months suffice to develop the one out of the other, and that, too, by a series of modifications so small that were the embryo examined, at successive minutes, even a microscope would with difficulty disclose any sensible changes. Aided by such facts, the conception of general evolution may be rendered as definite a conception as any of our complex conceptions can be rendered. If, instead of the successive minutes of a child's fœtal life, we take successive generations of creatures, if we regard the successive generations as differing from each other no more than the fœtus did in successive minutes, our imaginations must indeed be feeble if we fail to realize in thought the evolution of the most complex organism out of the simplest. If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race."[72]
Here, then, we have a comparison between what takes place in the development of the individual animal in the space of a few years, and what may be supposed to take place in the successive generations of different creatures through untold millions of years. We turn then to the proof, direct or indirect, that races of entirely distinct organisms have resulted from antecedent races by gradual transformation. Direct proof sufficient to establish the progressive modifications of antecedent races into other races is not claimed to exist; yet it is claimed that there are numerous facts of the order required by the hypothesis which warrant our acceptance of it. These facts are the alterations of structure which take place in successive generations of the same species, amounting, in the course of several generations of the same race, to additions and suppressions of parts. These changes among the individuals of the same race, comprehended in what is scientifically called "heredity" and "variation," are exhibited by the transmission of ancestral peculiarities of structure, by their occasional suppression in some individuals of the race and their reappearance in others, and by a difference in the relative sizes of parts. These variations, arising in successive short intervals of time, are said to be quite as marked as those which arise in a developing embryo, and, in fact, they are said to be often much more marked. "The structural modifications proved to have taken place since organisms have been observed is not less than the hypothesis demands—bears as great a ratio to this brief period as the total amount of structural change seen in the evolution of a complex organism out of a simple germ bears to the vast period during which living forms have existed on earth."[73]
The difficulty that is thus prepared for the hypothesis of the special creation of species may now be stated. There is a professed conception of the ultimate power which is manifested to us through phenomena. That conception implies omnipotence and omniscience, and it therefore implies regularity of method, because uniformity of method is a mark of strength, whereas irregularity of method is a mark of weakness. "A persistent process, adapted to all contingencies, implies greater skill in the achievement of an end than its achievement by the process of meeting the contingencies as they severally arise." And, therefore, those who adopt the notion of the special creation of species do, it is said, in truth impair the professed character of the power to which they assume that the phenomena of the existence of species are to be referred, whereas the hypothesis of the evolution of species out of other species is much more consistent with the professed conception of the ultimate power.
In this claim of superiority for the evolution hypothesis, the learned philosopher seems to have been almost oblivious of the fact that he was dealing with animal organisms in two aspects: first, in regard to the method by which individuals of the same species come into existence; and, secondly, in regard to the method by which different species have come into existence. In the first case, regularity of method is evinced by the establishment of a uniform process of procreation and gestation. This process, while retaining throughout the different classes of animals one fundamental and characteristic method, namely, the union of the sexes, is widely varied in respect to the time of gestation, the fœtal development, and the nourishment of the young before and after birth. There is no difficulty whatever in discovering the great reason for which this system of the reproduction of individuals was established. The tie that it makes between parents and offspring, and more especially the tie between the female parent and the offspring, was obviously one grand end for which this system of giving existence to individuals was adopted; and although the instinct which arises out of it is in some species feeble and almost inactive, it rises higher and higher in its power and its manifestations in proportion as the animals rise in the scale of being, until in man it exhibits its greatest force and its most various effects, producing at last pride of ancestry, and affecting in various ways the social and even the political condition of mankind. But how can any corresponding connection between one race of animals and another, or between antecedent and subsequent species, be imagined? The sexual impulse implanted in animals leads to the production of offspring of the same race. The desire for offspring keeps up the perpetual succession of individuals, and love of the offspring insures the protection of the newly born by the most powerful of impulses. But what can be imagined as an analogous impulse, appetite, or propensity which should lead one species to strive after the production of another species? Is it said that the different species are evolved out of one another by a process in which the conscious desires, the efforts, the aspirations of the preceding races play no part? This is certainly true, if there was ever any such process as the evolution of species out of species; and it follows that, in respect to one great moral purpose of a process, there is no analogy to be derived from the regularity and uniformity of the process by which individuals of the same species are multiplied. Moreover, in regard to the latter process, we know that a barrier has been set to its operation; for Nature does not now admit of the sexual union between animals of entirely distinct species, and we have no reason to believe that it ever did admit of it at any period in the geological history of the earth.
Still further: In what sense are special creations "irregularities of method"? In what sense are they "contingencies"? And if they are "contingencies," how does it imply less skill to suppose that they have been met as they have severally arisen, than would be implied by supposing that they have been achieved by a uniform process adapted to all contingencies? This notion that something is derogated from the idea of omnipotence and omniscience by the hypothesis that such a power has acted by special exercises of its creating faculty in the production of different orders of beings as completed and final types, instead of allowing or causing them to be successively evolved out of each other by gradual derivations, is neither logical nor philosophical. In no proper sense is a method of action an irregular method unless it was imposed upon the actor by some antecedent necessity, which compelled him to apply a method which was made uniform in one case to another case in which the same kind of uniformity would not be indispensable. The uniformity of the process by which individuals of the same species are multiplied is a uniformity for that particular end. The regularity in that case is a regularity that has its special objects to accomplish. The uniformity and regularity of a different method of causing different types of organisms to exist, so long as the object is always effected in the same way, is just as truly a regularity and uniformity for that case, and just as completely fulfills the idea of infinite skill. That such creations are specially made, that they are independently made, and that each is made for a distinct purpose and also for the complex purposes of a varied class of organisms, does not render them contingencies arising at random, or make the method of meeting them an occasional, irregular, spasmodic device for encountering something unforeseen and unexpected. The very purposes for which the distinct organisms exist—purposes that are apparent on a comprehensive survey of their various structures and modes of life—and the fact that they have come into existence by some process that was for the production of the ends a uniform and regular one, whether that process was special creation or evolution, render the two methods of action equally consistent with the professed conception of the ultimate power. On the hypothesis of special creations so many different types of organism as the Creator has seen fit to create have been made by the exercise of a power remaining uniformly of the same infinite nature, but varying the products at will for the purposes of infinite wisdom.
What, again, does the learned author mean by meeting "contingencies" "as they have severally arisen"? This suggestion of a difficulty for the believers in special creations seems to imply that the distinct types of animal organisms arose somehow as necessities outside of the divine will, and that the Almighty artificer had to devise occasional methods of meeting successive demands which he did not create. The hypothesis of special creations does not drive its believers into any such implications. The several distinct types of animal organisms are supposed to have arisen in the divine mind as types which the Almighty saw fit to create for certain purposes, and to have been severally fashioned as types by his infinite power. They are in no sense "contingencies" which he had to meet as occasions arising outside of his infinite will. A human artificer has conceived and executed upon a novel plan a machine that is distinguishable from all other machines. He did not create the demand for that machine; the demand has grown out of the wants of society; and the artificer has met the demand by his genius and his mechanical skill, which have effected a marked improvement in the condition of society. In one sense, therefore, he has met a "contingency," because he has met a demand. But the infinite Creator, upon the hypothesis of his existence and attributes, does not meet an external demand; there is no demand upon him; he creates the occasion; he makes the different organisms to effectuate the infinite purposes which he also creates; the want and the means of satisfying the want alike arise in the infinite wisdom and will. Such is the hypothesis. We may now, therefore, pursue in some further detail the argument which maintains that this hypothesis is of far inferior strength to that of evolution, as the method in which the Almighty power has acted in the production of different animal organisms.
First we have the analogy that is supposed to be afforded by what takes place in the development of a single cell into a man in the space of a few years, and an alleged correspondence of development by which a single cell, in the course of untold millions of years, has given origin to the human race. Granting any difference of time which this comparison calls for, and substituting in place of the successive moments or years of an individual life, from the formation of the ovum to the fully developed animal, the successive generations of any imaginable series of animals, the question is not merely what we can definitely conceive, or how successfully we can construct a theory. It is whether the supposed analogy will hold; whether we can find that in the two cases development takes place in the same way or in a way that is so nearly alike in the two cases as to warrant us in reasoning from the one to the other. In the case of the development of the single cell into the mature animal, although we can not, either before or after birth, detect the changes that are taking place from minute to minute, the infinitesimal accretions or losses, we know that there is a perpetual and unbroken connection of life maintained from the moment when the fœtus is formed to the moment when the mature animal stands before us. Break this connection anywhere in the process of development, and life is destroyed; the development is at once arrested. It is this connection that constitutes, as I presume, what the learned author calls the "appropriate conditions," in the case of the production of the individual animal; it is, at all events, the one grand and indispensable condition to the development of the cell into the fœtus, of the fœtus into the newly born child, and of the child into the man. Now, if we are to reason from this case of individual development to the other case of successive generations of creatures differing from each other in the same or any other ratio in which the perfect man differs from the ovum, the fœtus, or the newly born child, which are all successive stages of one and the same individual life, we ought to find in the successive generations of the different creatures some bond of connection, some continuity of lives with lives, some perpetuation from one organism to another, that will constitute the "appropriate conditions" for a corresponding development from a single cell through the successive types of animal life into the human race. Without such connection, continuity, perpetuation from organism to organism, shown by some satisfactory proof, we have nothing but a theory, and a theory that is destitute of the grand conditions that will alone support the analogy between the two cases. If anywhere in the supposed chain of successive generations of different animals the continuity of animal and animal is broken, the hypothesis of special creations of new organisms must come in: for we must remember that we are reasoning about animal life, and if the continuity of lives with one another is interrupted, the series terminates, just as the series between the ovum, the fœtus, the child, and the man terminates, at whatever stage it is interrupted by a cause that destroys the mysterious principle of life. It is therefore absolutely necessary to look for some proof which will show that in the supposed series of successive generations of animals out of antecedent types, by whatever gradations and in whatever space of time we may suppose the process of evolution to have been worked, there has been a continuity of life between the different types, a perpetuation of organism from organism, a connection of lives with lives.
We now come to another supposed analogy, on which great stress is laid by the evolution school, and especially by Mr. Spencer. Individuals of the same family are found to be marked by striking peculiarities of structure, ancestral traits, which appear and disappear and then appear again, in successive generations. This is obviously a case where the "appropriate conditions" are all comprehended in the connection of life with life. When we trace the pedigree of a single man or any other individual animal back to a remote pair of ancestors, we connect together in an unbroken chain the successive generations of parents and offspring. If the chain is anywhere broken, so that direct descent can not be traced throughout the series, we can not by direct evidence carry the peculiarities of family traits any further back than the ancestor or pair of ancestors with which we can find an unbroken connection of life with life. We do indeed often say in common parlance that an individual must have a trace of a certain blood in his veins, because of certain peculiarities of structure, complexion, or other tokens of descent, even when we can not find a perfect pedigree which would show where the infusion of the supposed blood came in. But although it might be allowable, in making out the descent of an individual man or any other animal, from a certain ancestor or pair of ancestors, to aid the pedigree by strong family or race resemblance, even when a link is wanting, it could only be for the purpose of establishing a pedigree, a connection of lives with lives, that such collateral evidence could be resorted to. If by direct proof of an unbroken descent a full pedigree is made out, or if, when some link is wanting, the collateral proof from strong family or race resemblances is sufficient to warrant the belief that the link once existed, we might accept it as a fact that the individual descended from the supposed ancestors in a direct line, or that some peculiarity of blood came into his constitution at some point in the descent of individuals from individuals.[74]
Can we apply this mode of reasoning to the evolution of distinct types of animals out of antecedent and different types? The very nature of the descent or derivation that is to be satisfactorily established requires a connection of lives with lives, just as such a connection is required in making out the pedigree of an individual animal. We must construct a pedigree for the different classes or types of animals through which, by direct or collateral evidence, we can connect the different organisms together, so as to warrant the belief that by the ordinary process of generation these animals of widely different organizations have been successfully developed out of each other, life from life, organisms from organisms. The hypothesis is, that from a single cell all the various races and types of animals have in process of time been gradually formed out of each other, through an ascending scale, until we reach the human race, whose race pedigree consists of a series of imperceptible formations, back to the single cell from which the whole series proceeded. This, we must remember, is not a case of the evolving production of different forms of inanimate matter, but it is the case of the evolving production of different forms of animal life out of other preceding and different forms, by the process of animal generation.
Of direct evidence of this evolution of species, it can not be said that we have any which will make it a parallel case with the direct evidence of the descent of an individual from parents and other ancestors. We have different animal organisms that are marked by distinctions which compel us to regard them as separate species, and there is no known instance in which we can directly trace a production of one of these distinct species out of another or others by finding a connection of lives with lives. Even in the vegetable kingdom, with all the crosses for which Nature has made such wonderful and various provision, we do not find such occurrences as the production of an oak out of the seed of an apple, or the production of an orange-tree out of an acorn. We do not gather grapes of thorns or figs of thistles. There are barriers set to miscegenation even in the vegetable world, and we have no direct evidence that at any period in the geological history of the earth these barriers have been crossed, and very little indirect evidence to warrant us in believing that they ever have been or ever will be. In the animal kingdom such barriers are extremely prominent and certain. We not only have no direct evidence that any one species of animal was at any period of the earth's history or in any length of time gradually evolved out of another distinct species, but we know that the union of the sexes and the production of new individuals can not take place out of certain limits; that, while Nature will permit of the crossing of different breeds of the same animal, and so will admit of very limited variations of structure, she will not admit of the sexual union of different species, so as to produce individuals having a union of the different organisms, or a resultant of a third organism of a different type from any that had preceded it. Is it, for example, from mere taste or moral feeling that such occurrences as the sexual union between man and beast have not been known to have produced a third and different animal? We know that it is because the Almighty has "fixed his canon" against such a union in the case of man and in the cases of all the other distinct animal organisms; and to find this canon we do not need to go to Scripture or revelation, although we may find it there also.
We are remitted, therefore, to indirect evidence, and in considering this evidence we have to note that we have nothing but an imaginary pedigree, or one hypothetically constructed, to which to apply it. In tracing the pedigree of an individual animal, we have a certain number of known connections of life with life; and where it becomes necessary to bridge over a break in the connection so as to carry the line back to an earlier ancestor, we may perhaps apply the collateral evidence of family or race resemblance to assist in making the connection with that particular ancestor a reasonably safe deduction. But in the case of the hypothetical pedigree which supposes the human race to have been evolved from a single cell through successive organisms rising higher and higher in the scale of being, we have no known connections of lives with lives to which to apply the collateral proofs. The collateral proofs are not auxiliary evidence; they are the sole evidence; and unless they are such as to exclude every other reasonable explanation of the phenomena which they exhibit excepting that of the supposed evolution, they can not be said to satisfy the rules of rational belief in the hypothesis to which we apply them.
What, then, is the indirect and collateral evidence? It consists, as we have already seen, of two principal classes of phenomena: first, resemblances of fœtal development which are found on comparing the fœtal growth of different species of animals; second, resemblances in the structure of different species of animals after birth and maturity. These various resemblances are supposed to constitute proof of descent from a common stock, which may be carried back in the series as far as the resemblance can be carried, at whatever point that may be. Thus, in comparing all the vertebrata, we find certain marked peculiarities of structure common to the whole class: the deduction is, that all the vertebrate animals came from a common stock. In comparing all the mammalia, we find certain marked peculiarities of structure common to the whole class: the deduction is that all the mammalia came from a common stock. Going still further back in the supposed series, we come to the amphibians, as the supposed common stock from which the vertebrate and mammalian land animals were derived; and, comparing the different classes of the amphibians, we find certain resemblances which point to the fish inhabitants of the water as their common stock; and then we trace the more highly organized fishes through the more lowly organized back to the aquatic worm, which may itself be supposed to have been developed out of a single cell.[75]
The resemblances of structure, wherever we make the comparison between different species, are referable to an ideal plan of animal construction, followed throughout a class of animals, and adjusted to their peculiar differences which distinguish one species from another, just as in the vegetable world there is an ideal plan of construction of trees followed throughout a class of plants, and adjusted to the peculiar differences which distinguish one kind of tree from another. As between man and the monkey, or between man and the horse, or the seal, or the bat, or the bird, there are certain resemblances in the structure of the skeleton, which indicate an identity of plan, although varied in its adjustments to the distinguishing structure of each separate species of animal. In a former chapter, I have shown why the adoption of an ideal plan of a general character is consistent with what I have called the "economy of Nature" in the special creation of different species. On a careful revision of the subject, I can see no reason to change the expression, or to modify the idea which it was intended to convey, and which I will here repeat. It is entirely consistent with the conception of an infinite and all-wise creating power, to suppose that in the formation of a large class of organisms, all the constructive power that was needed for the formation of a general plan was exercised throughout the class, and that there was super added the exercise of all the power of variation that was needful to produce distinct species. Repetition of the same general plan of construction is certainly no mark of inferiority of original power, if accompanied by adaptations to new and further conditions. It is a proof that in one direction all the necessary power was used, and no more, and that in producing the distinct organisms the necessary amount of further power was also used. If we follow the resemblances of structure that may be traced through all the animals of a varied class, we shall find that they may be referred, as a rational and consistent hypothesis, to this method of giving to each animal its characteristic formation. If this is a rational hypothesis, it is so because it is consistent with all the observable phenomena; and consequently, the opposite hypothesis that all these phenomena of resemblances and differences are due to the law of evolution does not exclude every other explanation of their existence.
To apply this now to one of the comparisons on which great stress is laid—the comparison between the brain of man and that of the ape. Two questions arise in this comparison: 1. Do the resemblances necessarily show that these two animals came from a common stock? 2. Do the resemblances necessarily show that man was descended from some ape through intermediate animals by gradual transformations? And, when I ask whether the comparison necessarily leads to these conclusions, I mean to ask whether the resemblances point so strongly to the conclusions that they must rationally be held to exclude every other hypothesis.
Prof. Huxley furnished to Mr. Darwin a very learned note, in which he stated the results of all that is now known concerning the resemblances and differences in the structure and the development of the brain in man and the apes. The differences may be laid aside in the present discussion, because it is not necessary, for my present purpose, to found anything upon them. But the resemblances, just as they are stated by the eminent anatomist, without regard to controverted details, are the important facts to be considered. The substance of the whole comparison is that the cerebral hemispheres in man and the higher apes are disposed after the very same pattern in him as in them; that every principal "gyrus" and "sulcus" of a chimpanzee's brain is clearly represented in that of a man, so that the terminology which applies to one answers for the other; that there is no dispute as to the resemblance in fundamental character between the ape's brain and man's; and that even the details of the arrangement of the "gyri" and "sulci" of the cerebral hemispheres present a wonderfully close similarity between the chimpanzee, orang, and man.[76] These are said to be the result of a comparison of the adult brain of man and the higher apes; and, although it is claimed by some anatomists that there are fundamental differences in the mode of their development which point to a difference of origin, this is denied by Huxley, who maintains that there is a fundamental agreement in the development of the brain in man and apes. His views of the facts for the purpose of the present inquiry may be accepted without controversy, not only because he is an authority whose statements of facts I am not disposed to dispute, but because it is not necessary to dispute them. What, then, do they show?
They show that there are animals known as apes and animals known as men, whose brains are found to be fundamentally constructed upon the same general plan, with strong resemblances throughout the different parts of the organ; and the first question is, Do these resemblances show that the two animals came from a common stock? Upon the theory that man has resulted from the gradual modifications of the same form as that from which the apes have sprung, the resemblances in the structure of their respective brains are claimed as having a tendency to show that there was an animal which preceded both of them, and which was their common ancestor, in the same sense in which an individual progenitor was the common ancestor of two other individuals, whether one of these two individuals was or was not descended from the other in a direct line. On the other hand, upon the hypothesis of the special creation of the ape as one animal, and the special creation of man as another animal, there was no common stock from which the two animals have been derived, and the resemblances of their brains point to the adoption of a general plan of construction for that organ, or its construction upon the same model, and the adaptation of that model to the other parts of the structure, and the purposes of the existence of each of the two animals. Without again repeating the argument which shows that the latter hypothesis is perfectly consistent with the professed conception of the infinite power, I will now inquire whether, on the former hypothesis, we have anything to which we can apply the evidence of resemblance as a collateral aid in reaching the conclusion that these two animals were derived from a common progenitor, or from some antecedent animal whose brain and other parts of the structure became modified into theirs by numerous intermediate gradations.
Between the higher apes, or between any of the apes and any known antecedent and different animal, no naturalist has discovered the intermediate link or links. Darwin supposes that there was some one extremely ancient progenitor from which proceeded the two main divisions of the Simiadæ—namely, the Catarrhine and Platyrhine monkeys, with their sub-groups. This extremely ancient progenitor is nothing but a scientific hypothesis; or, to use a legal phrase, it had nothing but a constructive existence. It is necessary to believe in the principle of evolution, in order to work out the hypothesis of this creature from which the two great stems of the Simiadæ are supposed to have proceeded. Here, then, we have the case of a pedigree or succession of animal races, the propositum of which has no known existence. Next we have two known divisions of the Simiadæ, or monkeys; but, between them and their imaginary common progenitor, we have no known intermediate animals constituting the gradations of structure from the progenitor to the descendants. The whole chain has to be made out by tracing resemblances among the animals of a certain class that are known, then applying these resemblances to the supposed divergencies from the structure of a supposed progenitor, and then drawing the conclusion that there was such a progenitor. It may be submitted to the common sense of mankind, whether this is a state of facts which will warrant scientists or philosophers in using toward those who do not accept their theory quite so much of the de haut en bas style of remark as we find in the writings of Mr. Spencer.[77] If the researches of geologists had ever discovered any remains of an animal that would fulfill the requirements, and thus stand as the progenitor of the Simiadæ. By the case would correspond to that of a known individual from whom we undertake to trace the descent of another individual through many intermediates; and in such a case strong family resemblances of various kinds might possibly afford some aid in making out the pedigree as a reliable conclusion. But there is no means of connecting the Old World and the New World apes with any but an unknown and imaginary, progenitor. Darwin himself frankly tells us that "the early progenitor of the whole Simian stock, including man," is an undiscovered animal, which may not have been identical with, or may not even have closely resembled, any existing ape or monkey.[78]
Passing from the supposed common progenitor to the resemblances between the brain of the higher apes and the brain of man, we come to the question whether these resemblances show that man was descended from any of the Simian stock through intermediate animals by gradual transformation. Here the case is in one respect different; for the animals that are to be compared are known, and their respective brains have been subjected to close anatomical scrutiny. This part of the process of evolution begins from one true species, the ape, and ends in another true species, the man. We are unable to trace the man and the ape to a common progenitor race; but we find the ape possessed of a brain which strongly resembles man's. I have searched diligently in the writings of naturalists for a sound reason which ought rationally to exclude the hypothesis that the brain of the ape was formed upon the same ideal plan as the brain of man, each animal being a distinct species and separately created. Anatomical comparison of the two brains shows that, whether they were separately planned upon the same general model, or the one was derived from the other by a process of gradual transformation through successive intermediate animals, the resemblances are consistent with either hypothesis. We are remitted, therefore, to an inquiry for the evidence which will establish the existence of a race or races of animals through whom there descended to man the peculiar structure of brain found in one of the classes of apes—namely, the Catarrhine or Old World monkeys. If such intermediate races could be found, their existence at any period anterior to the period of man's appearance on earth would have some tendency to show that man was descended from one of the families of apes, and this tendency would become stronger in proportion to the number of successive links in the family chain that could be made out. But not one of these links is known to have existed. There is an assumption that man, "from a genealogical point of view, belongs to the Catarrhine or Old World stock" of monkeys; and this assumption is claimed to be supported by the fact that the character of his brain is fundamentally the same as theirs.
A brain is an organ which, upon the hypothesis of an independent creation of distinct species of animals, would be expected to be found in very numerous species, although they might differ widely from each other. In all the vertebrate animals this organ is the one from which, by its connection with the spinal chord, the central portion of the nervous system, that system descends through the arches of the vertebræ, and thence radiates to the various other organs of the body. The brain is the central seat of sensation, to which are transmitted, along certain nerves, the impressions produced upon or arising in the other organs; and it is the source from which voluntary activity is transmitted along other nerves to organs and muscles that are subjected to a power of movement from within. The office which such an organ performs in a complex piece of animal mechanism is therefore the same in all the vertebrate animals in which it is found; and it would necessarily be found to be constructed upon the same uniform plan, and with just the degree of uniformity and adaptation which would fit it to perform its office in the particular species of animal to which it might be given. In point of fact, we find this office of the brain performed in all the vertebrate animals upon the same uniform plan, with the necessary adaptations to the various structures of the different animals. Resemblances, therefore, in the convolutions of different parts of this organ, as found in different vertebrate animals, however close they may be, prove nothing more than the adoption of a general plan for the production of objects common to the whole class of the vertebrate animals; and unless we can find other and independent proof that one species was descended from another by connection of lives with lives through successive generations, the hypothesis of special creations of the different species is not excluded by the facts.
Let us now further examine the supposed kinship of man with the monkey, as evidenced by the similarity of the structure of the brains of the two animals, in reference to the supposed process of evolution as the means of accounting for the origin of two species so essentially distinct. How has it happened that different species have become completed and final types, transmitting, after they have become completed, one and the same type, by the ordinary process of generation, and not admitting of the sexual union with any other distinct species? On the theory of the evolution of animal out of animal, we must suppose that at some time the secondary causes of natural and sexual selection have done their work. It ends in the production of a species which thereafter remains one and the same animal, and Nature has established a barrier to any sexual union with any other species. If we give the rein to our imaginations, and, taking the process of evolution as it is described to us, suppose that in the long course of countless ages the struggle for existence among very numerous individuals has led to gradual transformations of structure which the sexual selection has transmitted to offspring, and so a new animal has at length been formed through the successive "survivals of the fittest," we reach an animal of a new species, and that species, under no circumstances, produces any type but its own, so far as we have any means of knowledge. All the knowledge respecting the ape that has been accumulated shows only that this species of animal, since it became a completed type, has procreated its own type and no other. Whatever struggle for existence the individuals of this type have had to undergo, whatever modifications of structure or habits of life the survival of the fittest individuals of this type may have produced from the earliest imaginable period until the present time, the fact remains that this species of animal is a completed and final product. At the same time we have another completed and final type of animal known as man, which, so long as he has been known at all, is a distinct and peculiar species. Between the brain of this animal and the brain of the other we find certain strong resemblances. In each of them this organ is a structure performing the same office in the animal mechanism, with adaptations peculiar to the varying structure of each of them. In order to justify the conclusion that the one animal is a modified descendant from the other, so as to exclude the hypothesis that the resemblances of any one or of all of their respective organs was a result of the adoption of a general plan in special creations of distinct species, we ought to find some instance or instances in which the completed animal called the ape has been developed into an animal approaching more nearly to man than the man, as he is first known to us, approached to the first ape that is known to us. Without such intermediate connections, the analogy of the descent of individuals from other individuals of the same species will not hold. There is nothing left but resemblances of structure in one or more organs, which are just as consistent with the hypothesis of special creations as with that of evolution. Strong resemblances of structure and in the offices of different organs may be found between man and the horse, but upon no theory of evolution has it been suggested that man is descended from the horse, or from any other animal to which he bears more or less resemblance, excepting the monkey; and it is quite possible that naturalists have been led unconsciously to make this exception by external resemblances of the monkey and the man, by the imitative power of the inferior animal when it comes in contact with man, and by some of its habits when found in its wild and native haunts.
[CHAPTER VI.]
The doctrine of evolution, according to Herbert Spencer, further considered.
In the last two preceding chapters I have examined what Mr. Spencer regards as the direct supports of the doctrine of evolution. I have now to consider the different orders of facts which, as he claims, yield to it indirect support. These are the facts derived from classification, from embryology, from morphology, and from distribution. An explanation is here needful of the sense in which he uses these respective terms, before the reader, who is not accustomed to them, is called upon to understand and appreciate the argument:
1. By classification is meant an arrangement of organic beings in some systematic manner, according to attributes which they have in common, and which may form the principle of a division into different classes or families. Pointing out that in the early history of botanical and zoölogical science the tendency was to make classifications according to a single characteristic, Mr. Spencer reminds us that later naturalists, by attending to a greater number of characteristics, and finally to the greatest number that can be found to be common to various classes of vegetable and animal organisms, have constructed systems of classification which, in place of a linear or a serial order, have exhibited the alliances of different groups, then the sub-groups, and the sub-sub-groups, so that the divergences and redivergences become developed, while the resemblances which obtain are preserved throughout the whole class. But it is at once apparent that, although classification, on whatever principle it is conducted, may be valuable as a means of fixing in the mind the resemblances or differences of structure that obtain in the different orders of organized beings, as, for example, among the vertebrate or the invertebrate animals, the flowering or the flowerless plants, the seeds naked or the seeds inclosed in seed-vessels, yet that any other system of classification, based upon other resemblances or differences which actually present means of grouping or separating the different families of organized beings, is just as valuable an aid in the investigation of facts. How far any classification affords an argument, or the means of constructing an argument, which will yield a support to the doctrine of evolution superior to that which it yields to the doctrine of special creations, is of course a question.
2. Embryology: This is the term employed to express that branch of inquiry which is concerned in a comparison of the increase of different organisms through the stages of their embryonic life, and in noting at different stages of this growth the characters which they have in common with each other; the resemblances of structure which at corresponding phases of a later embryonic stage are displayed by a less extensive multitude of organisms; and so on step by step, until we find the class of resembling embryos becoming narrower and narrower, and then we finally end in the species of which a particular embryo is a member. This process of tracing and eliminating embryonic resemblances is said to have "a profound significance"; because, beginning with a great multitude of resemblances between the embryonic development of different organisms, it reveals the divergences which they take on, and through every successive step we find new divergences, by means of which "we may construct an embryological tree, expressing the developmental relations of the organisms, resembling the tree which symbolizes their classificatory relations." We thus arrive at "that subordination of classes, orders, genera and species, to which naturalists have been gradually led," and which is said to be "that subordination which results from the divergence and redivergence of embryos, as they all unfold."[79] On this mode of comparing the embryonic development of different organized beings Mr. Spencer builds a scientific parallelism, which indicates, as he claims, a "primordial kinship of all organisms," and a "progressive differentiation of them," which justifies a belief in an original stock from which they have all been derived. In what way this method of investigation destroys or tends to destroy the hypothesis of special creations, or how it affords an important support to the doctrine of evolution, will be considered hereafter.[80]
3. Morphology, or the science of form, involves a comparison of the structure of different organisms in their mature state; an ascertainment of the resemblances between their structures, and of the community of plan that exists between them. Here, as in the aids derived from classification and embryology, it is claimed that the fundamental likenesses of forms of structure have a meaning which is altogether inconsistent with the hypothesis of predetermined typical plans pursued throughout immensely varied forms of organisms.
4. Distribution: This is the term applied to the phenomena exhibited by the presence of different organisms in different localities of the globe; or, as Mr. Spencer phrases it, "the phenomena of distribution in space." These phenomena are very various. Sometimes, it is said, we find adjacent territories, with similar conditions, occupied by quite different faunas. In other regions, we find closely allied faunas in areas remote from each other in latitude, and contrasted in both soil and climate. The reasoning, as given by Mr. Darwin and adopted by Mr. Spencer, is this: that "as like organisms are not universally or even generally found in like habitats, nor very unlike organisms in very unlike habitats, there is no predetermined adaptation of the organisms to the habitats." "In other words," Mr. Spencer adds, "the facts of distribution in space do not conform to the hypothesis of design." The reason why they do not is claimed to be that there are impassable barriers between the similar areas which are peopled by dissimilar forms; whereas there are no such barriers between the dissimilar areas which are peopled by dissimilar forms. The conclusion is, "that each species of organism tends ever to expand its sphere of existence—to intrude on other areas, other modes of life, other media." That is to say, there is a constant competition among races of organisms for possession of the fields in which they can find the means of subsistence and expansion; and this leads to new modes of existence, new media of life, new structures and new habitats.
The reader can now retrace his steps, and advert to the facts that are relied upon, under the four heads of the argument:
1. With regard to the argument derived from classification: it is to be observed that any system of classification is in a certain sense artificial, and at all events is manifestly conventional. But, in order that no injustice may be done to this branch of the argument for evolution, I shall state it in its full force. The classifications which naturalists make of the different organized beings according to their resemblances and differences reveal the fact of unity amid multiformity. This fact it is said points to propinquity of descent, "which is the only known cause of the similarity of organic beings." It is the bond, hidden indeed by various degrees of modification, but nevertheless revealed to us by the classifications which display the resemblances. Again, we have, it is said, in the influence of various conditions of animated organisms, "the only known cause of divergence of structure." Classification reveals to us these divergences. We have, then, the bond of resemblances which indicate propinquity of descent, and the divergences of structure produced by varying conditions of life. Put the two together, and we have remarkable harmonies of likenesses obscured by unlikenesses; and to this state of facts it is claimed that no consistent interpretation can be given, without the hypothesis that the likenesses and the unlikenesses were produced by the evolution of organisms out of organisms by successive generation, through a great lapse of time.
This argument contains no inconsiderable amount of assumption. While it may be true that some naturalists do not assign any cause for the similarity which obtains among organic beings excepting their descent from a common ancestral stock, it is not true that the similarity of structure is inconsistent with the hypothesis of another cause, namely, the adoption of a general plan of structure for a large class of organisms, and an intentional variation in those parts of structure which mark the divisions of that class into species that are very unlike. It is true that evolutionists treat with scorn the idea of a pattern of structure followed throughout a class of animals, but made by designed adaptations to coalesce with differences that mark the peculiarities which distinguish one organism of that class from all the others. Mr. Spencer, for example, observes that "to say that the Creator followed a pattern throughout, merely for the purpose of maintaining the pattern, is to assign a motive which, if avowed by a human being, we should call whimsical."
Let us now follow this mode of disposing of the hypothesis of special creations, by adverting to some of the facts that are adduced in its summary condemnation; and, although the passage which I am about to quote is found in Mr. Spencer's work under the head of morphology, the illustration applies equally well to his argument from classification. Speaking of fundamental likenesses of structure, he says: "Under the immensely varied forms of insects, greatly elongated like the dragon-fly, or contracted in shape like the lady-bird, winged like the butterfly, or wingless like the flea, we find this character in common—there are primarily twenty segments. These segments may be distinctly marked, or they may be so fused as to make it difficult to find the divisions between them. This is not all. It has been shown that the same number of segments is possessed by all the Crustacea. The highly consolidated crab, and the squilla with its long, loosely-jointed divisions, are composed of the same number of somites. Though, in the higher crustaceans, some of these successive indurated rings, forming the exo-skeleton, are never more than partially marked off from each other, yet they are identifiable as homologous with segments, which, in other crustaceans, are definitely divided. What, now, can be the meaning of this community of structure among these hundreds of thousands of species filling the air, burrowing in the earth, swimming in the water, creeping about among the sea-weed, and having such enormous differences of size, outline, and substance, as that no community would be suspected between them? Why, under the down-covered body of the moth and under the hard wing-cases of the beetle, should there be discovered the same number of divisions as in the calcareous framework of the lobster? It can not be by chance that there exist just twenty segments in all these hundreds of thousands of species. There is no reason to think it was necessary, in the sense that no other number would have made a possible organism. And to say that it is the result of design—to say that the Creator followed this pattern throughout, merely for the purpose of maintaining the pattern—is to assign a motive which, if avowed by a human being, we should call whimsical. No rational interpretation of this, and hosts of like morphological truths, can be given except by the hypothesis of evolution; and from the hypothesis of evolution they are corollaries. If organic forms have arisen from common stocks by perpetual divergences and redivergences—if they have continued to inherit, more or less clearly, the characters of ancestral races, then there will naturally result these communities of fundamental structure among extensive assemblages of creatures, that have severally become modified in countless ways and degrees, in adaptation to their respective modes of life. To this let it be added that, while the belief in an intentional adhesion to a predetermined pattern throughout a whole group is totally negatived by the occurrence of occasional deviations from the pattern, such deviations are reconcilable with the belief in evolution. As pointed out in the last chapter, there is reason to think that remote ancestral traits will be obscured more or less according as the superposed modifications of structure have or have not been great or long maintained. Hence, though the occurrence of articulate animals, such as spiders and mites, having fewer than twenty segments, is fatal to the supposition that twenty segments was decided on for the three groups of superior Articulata, it is not incongruous with the supposition that some primitive races of articulate animals bequeathed to these three groups this common typical character—a character which has nevertheless, in many cases, become greatly obscured, and in some of the most aberrant orders of these classes quite lost."[81]
Whatever may be the explanation suggested by one or another hypothesis as to the mode in which this uniformity of structure came to exist, it is certain that it does exist. Twenty segments are found in hundreds of thousands of species which are immensely different from each other in size, outline, substance and modes of existence. Here, then, is a plan. There is a pattern, on which all these different organisms are constructed with a common peculiarity. It is averred that this could not have been the result of design, because this would be to impute to the Creator a whimsical motive, namely, that he followed the pattern throughout a vast group of different organisms merely for the purpose of following it. On the contrary, it may be contended that this uniformity of plan, this repeated pattern, affords the highest probable evidence of design; and that the supposed whimsicality of motive will entirely disappear as soon as we reach a purpose which may have had very solid reasons for this uniformity of structure. When we reason about the works of the Creator, we are reasoning about the methods of a being who, we must suppose, is governed by a purpose in all that he does. In reasoning about the methods of such a being, it is entirely unphilosophical to suppose that he has done anything merely for the sake of doing it, or for the sake of exercising or displaying his powers in repetitions that had no practical value. In order to reason consistently with the supposed attributes of the Creator, we should endeavor to find the value of any given pattern which we discover in a certain very large class of organisms differing widely from each other in other respects; and in order to find that value it is by no means essential to make out that the particular plan of construction was necessary to the making of any organism whatever. The true question is, not whether twenty segments were necessary to the construction of any organism, but whether, in each of the different species, this peculiar number of divisions was useful to each particular organism. If naturalists of the evolution school, instead of looking at everything through the medium of a certain theory, would in their dissection, for example, of the framework of the lobster, the body of the moth, and the body of the beetle, furnish us with facts which would show that these twenty divisions are of no use either for strength, or resistance, or suppleness, or adaptation to what is contained within them, we should have a body of evidence that could be claimed as tending to overthrow the hypothesis of intentional design. They might then speak of the repetition of this pattern as whimsical, upon the hypothesis that it was a repetition by design. But so little is done by this class of naturalists to give due consideration to the value of such repetitions, and so little heed is paid to the truth that the Creator does nothing that is useless—a truth which all sound philosophy must assume, because it is a necessary corollary from the attributes of the Creator—that we are left without the aid which we might expect from these specialists in natural science. Is it, then, impossible to discover, or even to suggest, that for each of these organisms this number of twenty divisions had a value? If they were of no value, we may safely conclude that they would never have existed, unless we ignore the hypothesis of infinite wisdom and skill. That hypothesis is a postulate without which we can not reason on the case at all. With it, we have as a starting-point the conception of a being of infinite perfections, who does nothing idly, nothing from whim, nothing from caprice, and nothing that is without value to the creature in which it is found. So that, while we can not in all cases as yet assign that value, we have the strongest reasons for believing that there is a value; and, instead of asserting that an extensive community of structure throughout a great branch of the animal kingdom has no meaning excepting upon the doctrine of evolution, it is the part of true science to assume that it may have another meaning, and to discover if possible what that other meaning is. This is the part of true science, because it is the part of sound philosophy. There is another remark to be made upon Mr. Spencer's reasoning on this particular case of a community of pattern. He says that it can not be imputed to chance. It was, then, either an intentional design, or it came about through the process of descent "from common stocks, which process was at the same time producing perpetual divergences and redivergences." Without turning aside for the present to ask from how many common stocks, it may be shown as in the highest degree probable that the occasional deviations from the pattern did not arise by the evolution process, because that process has in itself an element of chance which is fatal to the theory. The assertion is that "an intentional adhesion to a predetermined plan throughout a whole group is totally negatived by the occurrence of occasional deviations from the pattern." Let this assertion be examined first in the light of facts, and secondly by the absence of facts.
The hypothesis is that some primitive race of articulated animals, possessed by some means of the twenty segments, transmitted this ancestral trait to hundreds of thousands of species having no community of structure in other respects. Unfortunately for the theory, no figures can measure the chances against the preservation of a single pattern through such a multitude of differing organisms descending from a common stock. Infinity alone can express the chances against such a result. While, according to the theory, the deviations from the original type were constantly working out new organisms of the most diversified forms, until there came to be hundreds of thousands of new species differing from each other in all but this one peculiarity—a diversity which is supposed to have been caused by the fundamental law of evolution—how did it happen that the same law did not break this uniformity of articulation? If it was potent enough to differentiate the enormous multitude of these animals in all other traits, why did it not vary the number of segments with which the primitive race was endowed? Is the law of evolution limited or unlimited? If it is limited in its effects, then there are patterns of animal structure which it has not modified, and the presence of which in hundreds of thousands of different species must be explained as a form of structure designed for some end that was to be common to a great multitude of different beings. If the law of evolution was unlimited in its power, then the community of pattern has had to undergo chances of destruction or discontinuance that are immeasurable; as there can be no measure which will represent to the mind the infinitely diversified and innumerable causes that have produced the dissimilarities which compel a classification into the different species, upon the hypothesis of their descent from a common stock. Grant, too, for the purpose of the argument, that the occasional deviations from the pattern of twenty segments, producing a few groups with a smaller number of articulations, are reconcilable with the belief that some later ancestral form became endowed with the smaller number which it transmitted to its descendants. How came that later ancestral form to be endowed with the smaller number of segments? Was there a still more remote ancestral race, which in some way became possessed of the smaller number, or did the spiders and the mites, in the countless generations of evolution, branch off from ancestral races having the full number of twenty segments? Upon either supposition, what an infinity of chances there were, against the natural selection of the smaller number, and against its preservation as the unvarying type of articulation found in the spiders and the mites! The supposition that the number of twenty segments was decided on for the three groups of superior Articulata for the mere sake of adhering to a pattern is doubtless unphilosophical. But it is not unphilosophical to suppose that whatever amount of articulation is found in each species was given to it because in that species it would be useful. If in some of the most aberrant orders of these animals the articulation is greatly obscured, or not found at all, the conclusion that it was not needed, or not needed in a like degree, is far more rational than the theory which commits the particular result to an infinity of chances against it; or which supposes it to have been worked by a process that might have produced a very different result, since it can not be claimed that natural selection works by methods of which any definite result can be predicated more than another.
Thus far I have considered Mr. Spencer's argument from the Articulata in the light of the facts that he adduces. Let us now test it by the absence of facts. In a former discussion, I have asked for facts which show, aside from the theory, that any one species of animal, distinctly marked as a continuing type, is connected by intermediate types or forms with any pre-existing race of another character. Take this class of the articulated animals, said to be of hundreds of thousands of different species having no community of form but this of articulation, and now known as perfect organisms, each after its kind. What naturalist has discovered the continuity of lives with lives, which would furnish the steps of descent of any one of this species from an antecedent and a different species? It is very easy to construct a theory, and from it to argue that there must have been intermediate links, which, if discovered, would show the continuity of lives from lives which the descent of one organism from another necessarily implies. To a certain extent, within certain limits, the sub-groups and the sub-sub-groups of the articulated class of animals, which classification or morphology reveals, may lay the foundation for a theoretical belief in an ancestral stock from which the different and now perfect forms of these distinct animals may have become developed by successive changes of structure. But the extent to which connected changes can be actually traced in the animal kingdom is extremely limited; and the important practical question is whether any one fact, or class of facts, has been discovered which will warrant the belief that beings of totally dissimilar forms and habits of life have, without any design, been evolved by the ordinary process of successive generation, through the operation of causes that have gradually modified the structure in all respects save one, and have at the same time enabled or allowed that one peculiarity of structure to escape from the influences which have modified both structure and modes of life in every other respect. Why, for example, upon the hypothesis of descent from a common stock, has that stock deviated under the influences of natural selection into the lobster, the moth, and the beetle, and yet the community of twenty segments of articulation has entirely escaped the effect of those influences? No reason can be assigned for the fact that it has escaped those influences, excepting that it was originally designed, and was impressed upon the proto-typical stock with such force as to place it beyond the reach of all such causes of modification as those which are ascribed to natural or sexual selection. Without the latter supposition, those causes were just as potent to bring about a modification in the number of articulations as they were to bring about all the astonishing diversities of structure and modes of life that we see, and therefore the most probable conclusion from the fact of this uniformity of the twenty segments is, that there was a barrier placed in this whole class of organisms, which has limited the modifying force of the supposed process of evolution, for the reason of some peculiar utility in this plan of articulation.
Perhaps it will be said that the process of evolution itself tends to the preservation of whatever is most useful, while the modifications are going on which develop new organs and new structures; and that thus, in the case before us, the twenty segments have been preserved throughout an enormous group by one of the fundamental laws of evolution, so that, if there is any peculiar utility in the twenty segments, that utility has been answered by the very process of gradual descent of one organism from another. But the difficulty with this reasoning is, that while it assumes for the modifying influences of natural and sexual selection a range of fortuitous causes sufficient to change the ancestral type into the acquisition of vastly diversified organs, powers, and modes of existence, so as to constitute new animals, it yet assumes that, by some recognition of a superior and paramount utility in the particular number of segments, the law of evolution has preserved that number from the influence of causes which have changed everything else. Now, the range of causes which was sufficiently varied, accidental, long-continued and complex to produce the diversities of structure in all other respects, by the infinitely modifying influences which have developed new organs and new modes of existence, must also have been of a sufficiently varied, accidental, long-continued, and complex character to have broken this plan of the twenty segments, unless we suppose that in some mysterious and inexplicable manner the different generations of these beings were endowed with some kind of sagacity which would enable them to strive for the preservation of this one peculiarity, or unless we suppose that Nature was ever on the watch to guard them from its destruction or variation, on account of its peculiar utility. The first supposition is not in accordance with the evolution theory; for that theory rejects all idea of conscious exertion on the part of any of the organisms. The second supposition leads us at once to the inquiry, how came it to be imposed upon a whole group of beings as a law of nature, that whatever utility of structure was of paramount importance to the whole group should be preserved against the modifying influences that were to produce species differing absolutely from each other, through hundreds of thousands of varieties, in every other feature of their existence? Can we get along here without the hypothesis of design? And, if there was such design, how does the fact of this uniformity amid such diversity become an argument against the hypothesis of a Creator? Or, how does it tend to displace the hypothesis of special creations, when we find that the very process of so-called evolution has failed to break the uniformity of a pattern that is conceded not to have been the result of chance, although that pattern was exposed to just as many and as powerful causes of modification as those which are assumed to have brought about the modifications in every other feature of the animal existence? The truth would seem to be, that the uniformity amid so great a diversity was either the result of a design which placed it out of the reach of all the modifying influences, or else it has, by a most incalculable result, escaped from the effect of those influences by a chance in which the ratio of one to infinity can alone measure the probability of such an escape.
Let us now advert to another of Mr. Spencer's illustrations of the futility of the "supernatural" and of the rationality of the "natural" interpretation.[82] This illustration is derived from what are called "homologous" organs; and the particular instance selected is the vertebral column.[83] There are creatures, such as snakes, a low order of the vertebrate kingdom, in which the bony axis is divided into segments of about the same dimensions from end to end, for the obvious advantage of flexibility throughout the whole length of the animal. But in most of the higher vertebrata, some parts of this axis are flexible and others are inflexible; and this is especially the case in that part of the vertebral column called the sacrum, which is the fulcrum that has to bear the greatest strain to which the skeleton is exposed, and which is yet made not of one long segment or vertebra, but of several segments "fused together." Mr. Spencer says: "In man there are five of these confluent sacral vertebræ; and in the ostrich tribe they number from seventeen to twenty. Why is this? Why, if the skeleton of each species was separately contrived, was this bony mass made by soldering together a number of vertebræ like those forming the rest of the column, instead of being made out of one single piece? And why, if typical uniformity was to be maintained, does the number of sacral vertebræ vary within the same order of birds? Why, too, should the development of the sacrum be the roundabout process of first forming its separate constituent vertebræ, and then destroying their separativeness? In the embryo of a mammal or bird, the substance of the vertebral column is, at the outset, continuous. The segments that are to become vertebræ, arise gradually in the midst of this originally homogeneous axis. Equally in those parts of the spine which are to remain flexible, and in those which are to grow rigid, these segments are formed, and that part of the spine which is to compose the sacrum, having passed out of its original unity into disunity by separating itself into segments, passes again into unity by the coalescence of these segments. To what end is this construction and reconstruction? If, originally, the spine in vertebrate animals consisted from head to tail of separate movable segments, as it does still in fishes and some reptiles—if, in the evolution of the higher vertebrata, certain of these movable segments were rendered less movable with respect to each other, by the mechanical conditions to which they were exposed, and at length became relatively immovable—it is comprehensible why the sacrum formed out of them should continue ever after to show more or less clearly its originally segmented structure. But on any other hypothesis this segmented structure is inexplicable."
We here see the predominating force of a theory which refuses all possible rationality to any hypothesis but its own. The confident tone with which facts are arrayed and are then pronounced inexplicable upon any other hypothesis than that which the writer asserts, without one scintilla of proof of their tendency to exclude every other supposition, renders the refutation of such reasoning a wearisome task. But there is here one plain and sufficient answer to the whole of the supposed difficulty. The evolution theory, in this particular application of it, is that originally there were vertebrate animals in which the spine consisted of separate movable segments from head to tail, as it does now in fishes and reptiles; but, as the higher vertebrata were evolved out of these lower forms, the movable segments were rendered less movable with respect to each other, and at length in the sacrum the segments became relatively immovable, and yet the originally segmented structure was retained in this part of the column, by force of the propinquity of descent from an antecedent type which had the whole column divided into movable segments. Upon no other hypothesis, it is asserted, is this result explicable.
Mr. Spencer's analysis of the sacrum is somewhat defective. It is, as he says, that part of the vertebrate column which in the higher class of vertebrate animals is, during fœtal life, composed, like all the rest of the column, of distinct vertebræ. These vertebræ, like the others, are flexible in the fœtal stage, but after birth they become coalesced or united into one piece, instead of remaining in separate pieces. Thus far, Mr. Spencer's description is, I am informed by anatomists, correct. But the questions which he propounds as if they were unanswerable upon the assumption that this change is inexplicable upon any other hypothesis than that of the evolution of the higher vertebrata out of the lower vertebrate animals, and that the sacrum, with its continuous piece, has retained the segmented outward form by force of the descent, demand closer consideration. Let us trace the process of formation in the human species, and then see what is the just conclusion to be derived from it. In the embryonic condition, the substance which is to form the vertebral column is continuous. As the fœtus is developed, this substance separates itself into the segments which are called vertebræ, and these segments remain flexible and movable throughout the column. After birth, the five lower segments become united in what is substantially one piece, but of course the marks of the original segments remain. This is what occurs in the origin and growth of the individual. Now, looking back to the period when this species of animal did not exist, and supposing it to have been specially created in the two related forms of male and female, endowed with the same process of procreation and gestation that has been going on ever since there is any recorded or traditionary knowledge of the race, why should not this very growth of the sacrum have been designed, in order to produce, after the birth of the individual, that relative rigidity which would in this part of the vertebral column be useful to an animal destined to an upright posture of the whole skeleton and to the habits and life of a biped? And, if we extend the inquiry to other species, why should we not expect to find, as in the case of an oviparous vertebrate like the ostrich, a repetition of the same general plan of forming the spinal column, for the same ultimate purpose, with such a variation in the number of original segments that are to constitute the sacrum as would be most useful to that bird, thus establishing for the ostrich a sacrum that in a reptile or a fish would not only not be required, but would be a positive incumbrance? Upon the hypothesis of special creations of the different species of vertebrate animals, every one of Mr. Spencer's questions, asked as if they were unanswerable, can receive a satisfactory solution. Thus, he asks, "Why, if the skeleton of each species was separately contrived, was this bony mass [the sacrum] made by soldering together a number of vertebræ like those forming the rest of the column, instead of being made [aboriginally] in one single piece?" The answer is, that in the establishment of the process of gestation and fœtal growth, if a human artificer and designer could have devised the process, he would have selected the very one that now exists, for certain obvious reasons. First, he would have designedly made the process to consist, in the embryo, of a division of the substance which was to form the vertebral column in a continuous and uniform division into segments, because the whole column is to have at first the flexibility that may be derived from such a division. Secondly, when the time was to arrive at which the formation of the sacrum, with its practical continuity of a single piece, was to commence, he would select the number of the lower vertebræ that would make a sacrum most useful to the particular species of animal, and would weld them together so as to give them the relative rigidity and action of a single piece. But as the whole formation is the result of a growth of the sacrum out of a part of the slowly forming column originally divided into vertebræ, the marks of these separate vertebræ would remain distinguishable, while they would cease to have the mechanical action of separate vertebræ.
Another of Mr. Spencer's questions is, "Why, if typical uniformity was to be maintained, does the number of sacral vertebræ vary within the same order of birds?" The answer is the same as that which assigns a reason for all other variations in the skeleton of animals of the same order but of different varieties, namely, the special utility of the variations in the number of sacral vertebræ that would be most useful in that variety. The typical uniformity maintained is a uniformity in the process of growth and formation, down to a point where the variations are to come in which mark one animal from another; and I have more than once had occasion to suggest that the typical uniformity, and its adaptation to the varying requirements of different beings, is the highest kind of moral evidence of the existence, wisdom, and power of a supreme artificer, and that it militates so strongly against the doctrine of evolution that, without more proof than can possibly be claimed for that doctrine, we ought not to yield to it our belief.
The theory that the original condition of all vertebrate animals was that of separate movable segments throughout the spinal column, as it is now in fishes and some reptiles, and that in the evolution of the higher vertebrates out of these lower forms, certain of these movable segments were rendered less movable with respect to each other by the mechanical conditions to which the successive generations were exposed, until at length the sacrum was formed, is undoubtedly a theory that excludes all design of an infinite artificer, and all intention whatever. It is a theory which relegates the most special contrivances and the most exact adaptations to the fortuitous operation of causes that could not have produced the variations of structure and at the same time have preserved the typical uniformity. It is certainly a theory which we should not apply to the works of man, if we were investigating products which seemed to be the result of human ingenuity and skill, but of the origin of which we had no direct evidence. In such a case, we should not shut our eyes to the proofs of intentional variations and adaptation, or, if we did, our speculations would not be likely to command the assent of cultivated and sound reasoners. We may treat the works of Nature by a system of logic that we should not apply to the works of man, but if we do, we shall end in no tenable results. The principal and in fact the only essential distinction to be observed between the works of Nature and the works of man relates to the degree of power, intelligence, and skill in the actor. If we assume, as we must, that in the one case there was an actor, applying will, intelligence, and power to the properties of matter, and molding it into certain products and uses, and that in the other case there was no actor, but that all products and results are but the ungoverned effects of what are called natural laws in contradistinction to all intentional purposes, we must argue upon principles that are logically and diametrically inconsistent in themselves, and at variance with fundamental laws of reasoning.
I will now advert to an omission in Mr. Spencer's analysis of the sacrum, which overlooks one of the strongest proofs of intentional design afforded by that part of the spinal column. We have seen what was its general purpose and growth, and the process of its formation. We have now to note its variations in the male and the female skeleton. In the male, the sacrum, thus formed before birth, after birth answers to and performs its ultimate function of a comparatively rigid and inflexible piece of bone, and it is provided with no other special characteristic. In the female, on the contrary, there is a most remarkable adaptation of this piece to the function of maternity. While all the upper vertebræ of which this piece was originally composed are welded together after birth in the female as in the male, in the female the lowest segment of all remains for a certain time flexible relatively to the upper part of the sacrum, in order to admit of the necessary expansion of the pelvis during the passage of the infant from the womb of the mother. In the normal condition of females of all the vertebrate orders, this flexibility of the lower part of the sacrum continues while the period of possible maternity continues. If in any individual female it happens to be wanting during the period of possible conception, delivery can not take place without danger to the mother or the offspring, or both. Hence, in very bad cases, nature has to be assisted by extraordinary means. But in the normal condition of the female sacrum, this flexibility, so essential in the process of safe delivery, is always found, and its special purpose is known to every anatomist, while it has no existence in the structure of the male. Is this distinction to be accounted for by the same kind of reasoning that undertakes to account for all the other great distinctions between the related forms of male and female, which reproduce their kind by a common process of the sexual union, namely, that this division of male and female came about by a habit that resulted now in the production of a male and now in the production of a female, from tendencies that were ungoverned by any special purpose? Must we not conclude, however inscrutable are the causes that determine the sex of a particular infant, that the sexes themselves were specially ordained? And if they were specially ordained, how are we to account for the special construction and function of each of them, without the interposition of a special design? And when we find a structure in the female obviously designed for a special purpose, and not existing in the male, are we to conclude that some particular race of females, in some remote period of antiquity, among the countless generations of the vertebrata, found that this flexibility of the sacrum would be highly convenient to them, and, having adopted it as a habit, transmitted it, as a specially acquired peculiarity of structure, to their female descendants? This is all very well as a theoretical speculation, but as a speculation it is entirely defective, because it assigns the peculiarity of structure to a cause that could not have produced it. On the other hand, the hypothesis of its special creation assigns it to a cause that could have produced it, and its existence is among the highest of the multitudinous evidences of intentional design and special formation.
Wherein consists the irrationality of the hypothesis that a plan of construction was intentionally, and with supreme skill, framed for very different beings, to answer in each of them a common purpose? The asserted irrational character of this hypothesis consists in nothing but a denial that there was a Creator. It comes down to this, if it comes to anything: because, if we assume that there was a Supreme Being who took any care whatever of the complex and manifold product that we call nature—if we suppose that he ordained anything—we must suppose that his power to construct was boundless, and that a repetition of his plans wherever they would be useful, to answer the beneficent and diversified ends of infinite skill and benevolence, is just as much in accordance with the whole hypothesis of his attributes as it is to suppose that he caused anything whatever to exist. If we deny his existence, if we can not satisfy ourselves of it at all, if we suppose that nothing was ordained, nothing was created, but that all these diversified forms of animal organisms grew out of a protoplasmic substance, and that there was never any absolute commencement of organic life on the globe, or any absolute commencement of anything whatever, it is of course idle to speculate upon the adoption or preservation of patterns, as it is equally idle to pursue the theory of evolution through stages which at last end nowhere whatever.[84]
It may be well to cite Mr. Spencer's final summary of the general truths which he claims to be revealed by morphology, because it will enable the reader to see just where the logical inconsequence of his position occurs: "The general truths of morphology thus coincide in their implications. Unity of type, maintained under extreme dissimilarities of form and mode of life, is explicable as resulting from descent with modification; but is otherwise inexplicable. The likenesses disguised by unlikenesses, which the comparative anatomist discovers between various organs in the same organisms, are worse than meaningless if it be supposed that organisms were severally formed as we now see them; but they fit in quite harmoniously with the belief that each kind of organism is a product of accumulated modifications upon modifications. And the presence, in all kinds of animals and plants, of functionally useless parts corresponding to parts that are functionally useful in allied animals and plants, while it is totally incongruous with the belief in a construction of each organism by miraculous interposition, is just what we are led to expect by the belief that organisms have arisen by progression."[85]
Without expending much criticism upon the phrase "miraculous interposition," as a description of what takes place in special creation, it is sufficient to say that the act of special creation of a distinct organism is to be first viewed by itself, as if it stood alone in nature, and that it is like any other act of causing a new thing to exist which did not exist before. To this idea should be added the fact that in the creation of an animal organism there is involved the direct formation of a peculiar type of animal, with a capacity of producing other individuals of the same type through a process of generation. When, after having attained this conception of the act of special creation, and contemplated a single instance of the supposed exercise of such a power, we extend our inquiries, we find many other instances of the exercise of the same power; and then we observe a certain unity of type in some peculiarity of structure, maintained under extreme dissimilarities of form and mode of life. How, then, is this one similarity of pattern, amid such multiformity in other respects, "worse than meaningless," if we suppose that "organisms were severally framed as we now see them"? The very hypothesis that they were so severally framed carries in itself a meaning which can not be thus summarily ignored; because that hypothesis implies a power in the Creator to do just what we see. You may deny the power; but if you admit the existence of the infinite creating power, you are remitted to the inquiry into its probable methods; and you can no more say that the special creation of distinct organisms, with a certain unity amid a great multiformity, leaves the whole phenomena without a meaning, than you can say that any method which you can suggest is necessarily the only method which will afford a rational meaning in what we see. You must go the length of denying the entire postulate of a Creator, before you can be in a situation to deny the meaning that is involved in the idea of creation; for that idea implies an absolute power to apply a uniform pattern of structure to a whole class of organisms varied in all other respects. The theory that each kind of organism is a product of accumulated modifications upon modifications, without any special interposition to produce the modified and distinct forms, must be maintained on one of two suppositions: either that at some period there was an absolute commencement of organic life in some form, upon this globe, and that then all the other forms which we see were left to be evolved out of that one by the ungoverned accumulation of modifications upon modifications, or else that there was never any absolute commencement of organic life at any time, but that matter, by some peculiar property derived from some source that is not suggested, took on combinations which resulted in some crude form of animated organism, and that then the accumulations of modifications upon modifications followed from some process of generation by which the successive organisms became multiplied and varied. Of the former supposition, I understand Mr. Darwin to have been a representative naturalist. Of the latter, I understand Mr. Spencer to be an advocate. Upon what may be called the Darwinian doctrine, the idea of a Creator, causing to exist at some time some crude form of animal life, is admitted. Upon the Spencerian doctrine, which will be in this respect more closely examined hereafter, I do not see that the idea of a creating power comes in anywhere, either at the commencement of a series of organisms or at any point in that series. But, upon the logical proposition asserted in the passage last above quoted, it is obvious that, unless the idea of a Creator is absolutely denied, the presence of a unity of type amid any amount of dissimilarities of form and mode of life can not be pronounced to be without meaning, because the idea of a Creator implies a power to make that very unity amid the uniformity, which is asserted to be inexplicable without resorting to the theory that it was not made at all, but that it grew out of events over which no superintending or governing power was exercised. Upon this kind of dogmatic assertion there can be no common ground of reasoning.
The assumed incongruity between the facts and the hypothesis of a special creation of each organism is an incongruity that arises out of the assumption that such special creation was an impossibility. If once the idea of an infinite creating faculty is assumed as the basis of the reasoning, all seeming incongruity vanishes, and the probable method of that creating power must be determined by the preponderance of evidence. If the power is denied, we must grope our way through systems which impute everything to the properties of substance, without any suggestion of a source from which those properties were derived, and without anything to guide them but the tendencies implanted in them, we know not how or when, and of the origin of which we have not even a suggestion. Some of the speculations of Greek philosophers adverted to in a previous chapter may serve to show us what comes of the omission to conceive of power as abstracted from substance or its properties. The philosophy which first attained to this conception led the way to that conception of an Infinite Being, without whose existence and attributes all speculation upon the phenomena of nature leads to nothing. A belief in his existence and attributes must undoubtedly be attained by an examination of his works, if we set aside the teachings of revealed religion. But if we can not attain it, we have no better means for believing in the doctrine of evolution than we have for believing in any other method by which the phenomena of nature have become what they are.
The question here is, not whether descent of organisms from organisms, with modifications upon modifications, is a supposable theory, but whether it is so satisfactorily shown that it can be said to exclude the hypothesis of a special creation of each organism. There may be parts of structure in one animal which seem to have no functional use, although we should be cautious in making the assumption that they are of no use because we have not yet discovered that use. But let it be assumed that these apparently useless parts in one animal correspond to parts which in another animal are functionally useful. If there was established for these two separately created animals a like system of procreation and gestation, that system, affected at the same time by a law of growth imposed by the special type of the species, might in one species lead to the presence of parts of which we can not recognize the use, and might in other species lead to the presence of parts of which we can see the use. It does not help to a better explanation to say that there has been an accumulation of modifications upon modifications in the course of an unknown descent of one organism from another. Why did these modifications stop short of the production of a species or of several species in which no resemblance of parts more or less functionally useful could be found? The supposition is that the modifications have been going on through millions of years. Time enough, therefore, has elapsed for the destruction of all uniformity of structure; and the causes of modification are as immeasurable as the period through which they are supposed to have been operating. The imaginary ancestral stock, wherever it is placed in the line of remote descent, had, in its first distinctive existence, a peculiar structure, which it bequeaths to its offspring. In the countless generations of its descendants, modifications of that structure take place, until a new animal is evolved. What preserved any unity of type from the modifying influences? It was not choice on the part of the several descending species; not a conscious exertion to preserve something; it was nothing but the propinquity of descent, which by the law of heredity transmitted certain resemblances. But why was that law so potent that it could preserve a certain unity of type, and at the same time so powerless as not to prevent the modifications which the successive organisms have undergone in all other respects? Or, to reverse the terms of the question, why were the causes of modification sufficiently powerful to produce distinct species, and yet not powerful enough to eliminate the resemblances which we find obtaining throughout the whole group of animals to which these several species belong? It would seem that here we are not to lose sight of the fact that, in the animal kingdom, procreation never takes place between a male and a female of distinct species, and that we have no reason to believe that it ever did take place. Now, although the evolution hypothesis supposes that, starting from an ancestral stock, the modifications of structure have been produced in offspring descended from parents of that same stock, which have transmitted acquired peculiarities to their immediate progeny, and so on indefinitely, yet there must have been a time when the diverging species became distinct and peculiar organisms, and when it became impossible for any crossing of these organisms to take place. All the supposed modifications, therefore, have taken place within the limits of an actual descent of one kind of animal from another, each successive pair belonging to the species from which they were individually generated. In this descent of lives from lives, there came about changes which in progress of time led to two animals as wide asunder as the man and the ostrich, or as the man and the horse, and yet the causes which were powerful enough to produce these widely diverging species were not powerful enough to break up all unity of plan in some one or more respects. If naturalists of the evolution school would explain how there has come to be, for example, in the skeleton of the vertebrata, a bony structure called the spine, in which a certain resemblance and a certain function obtain throughout the whole class, and yet one species creeps upon its belly, another walks on four legs, and another on two, and one flies in the air and another never can do so, and how this could be without any design or special interposition of a creating power, but that the whole of this uniformity amid such diversity has arisen from acquired habits among the different descendants from an aboriginal stock that had no such habits in either mode of locomotion, and no organs for such modes of life, they would at least be able to commend their theory to a better appreciation of its claims than is now possible to those who want "grounds more relative" than a naked hypothesis.
3. The argument from embryology requires for its appreciation a careful statement of its abstract proposition, and a statement of it in a concrete form. As an abstract proposition, embryology, or the comparison of the development of different organisms under their embryonic stages, shows that in the earliest stage of any organism it has the greatest number of characters in common with all other organisms in their earliest stage; that at a later stage its structure is like the structures displayed at corresponding phases by a less extensive number of organisms; that at each subsequent stage the developing embryo becomes more and more distinguished from the groups of embryos that it previously resembled; and that this divergence goes on, until we reach the species of which the embryo is a member, in which the class of similar forms is finally narrowed to that species.
It seems that Von Baer formulated this generalization of embryologic development into an "embryologic law," which, according to Mr. Spencer, becomes a support to the hypothesis of evolution in this way: Species that had a common ancestry will exhibit a parallelism in the embryonic development of their individual members. As the embryos of the ancestral stock were developed in their growth, so the embryos of the descended species would be developed at corresponding phases in a similar way. As one species diverged from its ancestral stock, there would come about modifications in the development of its embryos, and thus a later ancestral stock would be formed, which would in turn transmit to its descendants in the development of the embryo less and less resemblances, and so on, until finally the individual animal, at birth, would structurally resemble only the individual infants of its own race.
Here, then, is another remarkable instance of the force of an adopted theory. First, we have a comparison of the embryonic development of different animals from their seminal germs which displays certain phenomena of resemblances and departures. Next, we have the assumption of an ancestral stock, the common origin of all the organisms in the development of whose embryos among its descendants an embryologic law was to work, starting from the visible resemblance of all the germs, then exhibiting structural changes into later ancestral stocks, and so on, until the resemblances are reduced to those which obtain only among individuals of the same species. So that, without the hypothesis, the assumption of an ancestral stock of all the organisms, formed somehow in the course of descent from a germ that gave rise to an animal of some kind, we have nothing to which to apply the embryologic law. We are to infer the embryologic law from the parallelism of embryonic development which prevails in the whole series of animal generation, or from its divergences, or from both, and then we draw from this law the inference that the whole series of animals came from some common stock. The difficulty with this whole theory is, as I have more than once suggested, that we have no means, aside from the theory itself, of connecting lives with lives, in the generation of one distinct species out of another. Without some proof of the fact that the human fœtus was a diverging growth out of some ancestral stock that was the same as that from which the fœtus of another animal was a different diverging growth, the embryologic law is no help to us whatever. If this kinship of the human fœtus with the fœtus of some other animal can not be found, by tracing the intermediate links which carry them respectively back to their common ancestor, between what animals in respect to their embryonic development can such kinship be found, excepting upon the theoretical assumption of a common origin of the whole vertebral class? If there was such a common ancestral stock, where is it to be placed, what was its character, when did the law of embryologic development begin to operate upon its descendants? Until some facts can be adduced which will have a satisfactory tendency to show the kinship of one animal with another by reason of ancestral descent from a common ancestral stock that was unlike either of them, the phenomena of embryologic development have no tendency to displace the hypothesis of special creations; for, on the latter hypothesis, the phenomena of resemblances and differences in the growth from the germ into the fœtus and from the fœtus into the newly born infant, evinced by any range of comparison of the different species, would be the same. If man was a special creation, and one of the higher quadrumana was also a distinct and separate creation, the establishment for each of a like process of procreation and gestation would produce all the resemblances of fœtal growth that obtain between them, and the ordained differences of their animal destinies would explain all the divergences. Let us see if this is not a rational conclusion.
It is exceedingly difficult for the common reader of such a work as that of Mr. Spencer, on which I am now commenting, to avoid the influence of the perpetual assertion that facts are explicable upon one hypothesis alone. At each step in the argument, the array of facts terminates with the assertion that, upon the hypothesis of design, the facts are inexplicable; and yet we are furnished with no reasoning that has a tendency to show that the facts necessarily exclude the hypothesis of design, or, in other words, that the facts are inconsistent with that hypothesis. It is essential to understand what is the true scope of the hypothesis of special creation; for, without a definite idea of what that term implies, we have no proper means of comparing the facts of animal resemblances or differences with the rationality of the hypothesis that they resulted from an intentional design. Recollecting, then, that we are now pursuing the resemblances and divergences that are found in a comparison of the embryologic development of different species of animals, let us endeavor to understand the meaning of what I have suggested at the close of the last preceding paragraph; namely, the establishment for a large class of animals of a like general system of procreation and gestation, and the ordination of different destinies for the different species of animals belonging to that class. I have said that the two branches of this hypothesis would account for the resemblances in the embryological growth of different animals, and would explain the divergences which obtain among their embryological developments. The first inquiry is, whether this hypothesis presents a true philosophic idea of special creation. The next inquiry is, whether it affords a satisfactory explanation of the phenomena of comparative embryologic development.
We must never lose sight of the one grand postulate of an infinite Creator. This postulate must be conceded to the believers in special creations, because any idea of creation implies a creating power. If we conceive of creation without a Creator, we must stop all argument. Now, the hypothesis of creation, as I have more than once said, implies a being of boundless faculties. There can be absolutely no limitation to the power of such a being, either in respect to the methods by which he will accomplish his objects, or to the number and variety of these objects, or to the purposes for which they are to exist. If we narrow our conception of creating power to anything less than an infinite faculty; if we suppose it to be restricted in any direction; if we argue about it as if there were things that it can not do, we shall be without the means of reasoning soundly upon anything that it is supposed to have done. It is quite otherwise when we are reasoning about the operation and effect of secondary causes. There is no secondary cause—no imaginable operation of a fixed quality of substance—no action of any of the properties of substance—that is not limited. The scope of its action may be very wide; within its sphere it may be enormously potent; but in its very nature it is bounded.[86] It is not so with the First Cause of all things; not so with the Infinite Power which, upon the hypothesis of a First Cause, has established all the physical laws of the universe and all the properties of matter. So that, when we reason about the methods of that infinite creating power, if we find a general system established, or a pattern repeated through a very large class of organisms, the proper inference is, not that the power was limited, but that it has been exercised to the whole extent of what was useful, and in that direction has been exercised no further; and if we find variations or additional structures incorporated with the repetition of a general pattern, the proper inference is that the unlimited creating power has put forth all the additional exertion and skill needful for the formation of new beings.
What, then, does the establishment of a like system of procreation and gestation imply, upon the supposition of the distinct creation of species? It implies a certain parallel embryonic development, from the germ to the fœtus and from the fœtus to the new-born infant, throughout a large group of different animals; and this parallelism would in certain stages of the embryonic growth display identity or close similarity of form and structure. But as in each species of animal the distinct creation would necessarily imply a distinct destiny, the parallelism of embryonic form and structure would cease at the point of development at which the characteristic structure of the species would begin to unfold itself. The general system of procreation and gestation common to a whole class of different animals, and the ordained diversity of species, would present the same phenomena of resemblances and differences in the embryonic development that are supposed to be explicable only by the hypothesis of a descent of all the species from a common ancestral stock through the process of evolution.
Notwithstanding the mystery and obscurity in which the process of animal procreation is involved—a mystery and obscurity which will perhaps never be fully solved—we can see enough to warrant some definite conclusions. One of these conclusions is that, in the formation of the germ which becomes developed into the fœtus, the male and female parent each contributes some cellular substance to the compound which constitutes that germ. We may safely infer this, because the individual animal becomes a union of characteristics belonging to both the parents, although the traits that are peculiar to one of the parents may be more or less marked in their different offspring, so that in one of the descendants the paternal and in another the maternal traits will predominate. But in every descendant from the same pair there is more or less of the peculiarities of each parent plainly discernible. The inference, therefore, may be safely drawn that the male and the female parent each contributes to the formation of the ante-fœtal germ some cellular substance, in which resides the typical characteristic of animal organism which each parent possesses. The compound germ that is thus formed is endowed with the mysterious principle of animal life which admits of growth and development; and whether after its formation the female parent bestows most or bestows least upon the product, that product consists of a union of cellular substances contributed by both the male and the female parent in the sexual act of procreation. This compound resultant germ, in the earliest stage of its formation, like the separate cells of which it is a union, exhibits no visible difference when we compare the ante-fœtal germ of one animal with that of a different animal. Perhaps we shall never be able to detect either chemical or mechanical differences in the cellular substances or in the earliest stage of the compound product which has resulted from their union. But in that compound product there resides a contributory cellular substance derived from each of the parents; and it is a just inference from this fact, and from what we learn when we trace the further development, that there is a peculiar and typical structure impressed upon and inwrapped in this compound germ, which is to grow into a fœtal development by a law of its own. There will at the same time be a particular law of development for each distinct species of animal, and a general law of development for a great variety of species among whom there obtains a common process of the sexual union and of the contribution of male and female cellular substance. When the fœtus becomes formed, there will still be marked resemblances in the different species, before the stage is reached at which the characteristic structure of each species is to begin to unfold itself. But at some time the fundamental difference of structure originally lodged in the cellular substances of which the compound ante-fœtal germ was composed, and impressed upon that germ as the type which was gradually to unfold itself into a distinct being, will begin to exert its force. The resemblances of structure will become less and less, as the fœtus of the different animals approaches to the time of birth. Organs, or appearances of organs, which at one stage of the comparison have seemed to indicate descent from a common ancestral stock, but which may have been only the result of a common process of fœtal development, will be found to be varied by force of the original diversity of structure and destiny that was made to reside in the seminal substance of each distinct species of animal; and, at length, this original and intentional peculiarity of structure and being would become perfected at or before the period when birth is to take place, leaving only those resemblances which must obtain in all organisms constructed in certain respects upon a uniform plan, and brought into being by a common process of procreation and gestation.
Let us now see whether this reasoning involves any such unphilosophical or unscientific belief as is supposed. Passing by the often-repeated assertion that the facts of comparative embryologic development are reconcilable only with the belief in evolution, let us advert to some of those facts. "The substitutions," says Mr. Spencer, "of organs and the suppression of organs, are among those secondary embryological phenomena which harmonize with the belief in evolution, but can not be reconciled with any other belief. There are cases where, during its earlier stages of development, an embryo possesses organs that afterward dwindle away, as there arise other organs to discharge the same functions. And there are cases where organs make their appearance, grow to certain points, have no functions to discharge, and disappear by absorption." The concrete illustration of this substitution and suppression of organs is thus given by Mr. Spencer:
"We have a remarkable instance of this substitution in the successive temporary appliances for aërating the blood which the mammalian embryo exhibits. During the first phase of its development, the mammalian embryo circulates its blood through a system of vessels distributed over what is called the area vasculosa, a system of vessels homologous with one which, among fishes, serves for aërating the blood until the permanent respiratory organs come into play. After a time, there buds out from the mammalian embryo a vascular membrane called the allantois, homologous with one which, in birds and reptiles, replaces the first as a breathing apparatus. But while, in the higher oviparous vertebrates, the allantois serves the purpose of a lung during the rest of embryonic life, it does not do so in the mammalian embryo. In implacental mammals it aborts, having no function to discharge; and in the higher mammals it becomes "placentiferous, and serves as the means of intercommunication between the parent and the offspring"—becomes an organ of nutrition more than of respiration. Now, since the first system of external blood-vessels, not being in contact with a directly oxygenated medium, can not be very serviceable to the mammalian embryo as a lung; and since the second system of external blood-vessels is, to the implacental embryo, of no greater avail than the first; and since the communication between the embryo and the placenta among placental mammals might as well or better have been made directly, instead of by metamorphosis of the allantois—these substitutions appear unaccountable as results of design. But they are quite congruous with the supposition that the mammalian type arose out of lower vertebrate types. For, in such case, the mammalian embryo, passing through states representing, more or less distinctly, those which its remote ancestors had, in common with the lower vertebrata, develops these subsidiary organs in like ways with the lower vertebrata."[87]
In what way, then, are these substitutions unaccountable as results of design, and why are they any more congruous with the supposition that the mammalian type arose out of the lower vertebrate type? In the first place, it is necessary to have a distinct conception of what is meant by design. In the present case, it means that for a certain large group of animals there was established a system of reproduction by the sexual union of male and female, each contributing a cellular substance peculiar to itself, in the formation of a compound cellular substance in which the separate substances are united, and which is to be developed into the fœtus by a law of growth; and as a further design there is wrapped up in the compound germ of each distinct species of animal a typical plan of ultimate form and structure. This typical plan can not be detected in the germ itself, as it is too subtile and obscure even for the microscope; but we have every reason to believe that it is there in all its distinctness of original purpose, because at a later stage of the embryonic development we find a distinct species of animal is the result. This is a conclusion that must be adopted by the evolutionist, as well as by the believer in special creations, because it has nothing to do with the question of how distinct species came to exist. Whether they were designedly and separately created, or were evolved out of one another, the reproductive process by which the individuals of the same species are brought into being alike involves the conclusion that, in the ante-fœtal germ of that species, there is somehow involved, in a form so minute that it can not be seen, the type of animal which is to belong to that species, and to no other. Here, then, we have the grand and compound design which is to obtain throughout a whole group of different animals; namely, that they shall multiply in the production of individuals of their own types, by a sexual union, in which the male and the female each contributes a cellular substance of its own to the formation of a compound germ, and in that germ there is made to reside the typical form and structure of a distinct organism, so minute that we can not see it, but which we must conclude from the result has been put there to be developed by a law of growth ordained for the accomplishment of a certain distinct order of beings. But the very obscurity of this type, in the earliest stage of embryonic development, leads to the conclusion that while it will never be lost, so long as its life is preserved, it will unfold itself in ways that will be equally beyond our ken, until the point is reached where it is no longer obscured, but where it is revealed in all its distinctness of outline and its peculiarity of structure. What is certain and invariable is, that the type peculiar to the species is at some time in the growth of the individual animal perfectly developed. But in the modes of its development through different embryonic stages, there will be variations and substitutions of organs in the different species, but in each distinct species these variations and substitutions will be uniformly the same, because the law of development imposed by the distinct type, while it may operate differently among different species, will always operate in the same way in the same species. Thus in one animal the development from the original type which was implanted in its seminal ante-fœtal germ may at one stage exhibit an organ for which at a later stage another organ will be substituted; and in another animal a seemingly corresponding organ may serve a different purpose, or may altogether abort. These embryologic phenomena, varying in different species, but occurring uniformly in the same species, are necessarily among the most obscure of all the phenomena of animal life, on account of the fact that they take place where we can not watch the changes or modifications as they are taking place during actual fœtal life. But they are no more explicable upon the hypothesis of the descent of distinct animals from a common stock, than they are upon the hypothesis of distinct creations of species. Upon the former hypothesis, the assumed propinquity of descent implies the preservation of the same mode of embryonic development until it becomes varied by the operation of causes that bring about a new habit of development, and then a fixation in this new habit after a new species or a new ancestral stock is formed; so that in each distinct species there comes at length to be a uniform process of substituting and suppressing organs, or changing the functions of organs. But how are we to account for the operation of causes that have preserved a parallelism of development, along with the operation of causes that have produced the different modes of development, when all the species are supposed to be derived from a common ancestral stock, which first began to procreate and to develop its descendants in one and the same way? What are the facts which will enable us to say that the mammalian type arose out of the lower vertebrate types, when we compare the different modes of their embryologic development? How are we to estimate the chances for a preservation of so much resemblance as exists between the two in their embryologic lives, and the chances for the variations that are observable? What we can safely conclude is that there is a law which holds each species in a constant repetition of its own fœtal growth, according to its unvarying development in the same series of changes, substitutions, or suppressions. But we can not safely conclude that this species became formed in the supposed process of descent from a remote ancestral stock, which may or may not have originally exhibited the same series of changes, substitutions, or suppressions. If the ancestors of the mammalian vertebrates were the kind of animal supposed, we have to find, in order to justify the supposed descent, those states which represent the correspondence between the mode in which the ancestral stock developed its own embryos, when compared with the mode in which the type of the lower vertebrata developed its embryos, so as to make it reasonably certain that these subsidiary organs derived their several substitutions or suppressions from the process of descent, and not from any special mode of development ordained for each distinct species. We may imagine these states through which the mammalian embryo has passed, but as yet we have only a theory which suggests their existence without facts to support it. The truth would seem to be that this whole subject of comparative embryology, upon the hypothesis of the kinship of all organized beings, or the descent of many distinct species from a common stock, is involved in very great difficulties; not the least of which is the difficulty of explaining how the diverging descendants from that stock came to be endowed with habits of embryologic life and growth that resulted in the production of very different modes of development, and at the same time preserved for each new species its own peculiar mode of development. To say, for example, that the mammalian embryo passed through states representing, more or less distinctly, those which its remote ancestors had in common with the lower vertebrata, and that it developed certain subsidiary organs in like ways with the lower vertebrata, is merely to state a theory, which, without some evidence that the mammalian embryo was a formation resulting from a connection of lives with lives back to a common ancestor whose embryo was developed as those of the lower vertebrata are, amounts to nothing. Often as this want of evidence has been adverted to, it must be here again pointed out: for the whole argument from embryology, like that derived from a comparison of the forms of mature animals, lacks the support of facts that are essential to show the connection of life with life which descent from a common ancestral stock necessarily implies.
On the other hand, the hypothesis of the distinct creation of different species deals with the phenomena of embryologic life in a very different way. It supposes the creation of a pair, male and female, and a law of procreation, designed for the multiplication of individuals of a fixed type. It supposes many such creations, each having in its own peculiar germ the characteristic type of organism that will distinguish the mature animal from all the others. It supposes finally a law of development common to all the species the individuals of which are multiplied by the sexual union of male and female; a law of growth under like conditions, which leads to a parallelism of development until the typical plan of form and structure designed for each distinct animal, and implanted in its germ, begins to take on a mode of development peculiar to that species, and at length the perfect individual of that species is the result. In this hypothesis, therefore, there is no necessity for resorting to any connection with an imaginary ancestral stock of a different type, or for resorting to a theoretical process by which successive generations may be supposed to have gradually arisen out of the ancestral stock by successive changes which have at length resulted in a totally new species. The new species is what is supposed to have been aboriginally created, and to have been placed under its own law for the multiplication of individuals of the same type. In point of simplicity, of comparative certainty, of freedom from accidental causes of variation of which we can predicate no specific result, this hypothesis seems to have a far greater degree of probable evidence in its favor than the theory which entirely lacks the requisite evidence of intermediate connections between the lives of one species with the lives of a remote and different species. For, while it may be truly said that no man ever saw a special creation take place, and while such an act of the infinite power is of a nature that places it beyond the observation of our senses, it is neither inconceivable nor improbable, nor inconsistent with the idea of the divine attributes which we derive from the study of nature. On the other hand, it is not only equally true that no man ever saw, or in the nature of things ever can see, an evolution of distinct species out of other distinct species, but the whole nature of the supposed process of transformation involves an element of chance which forbids all calculation of the results. How, for example, in this very matter of comparative embryological development on the hypothesis of descent of all the species of the vertebrate animals from a common ancestral stock of a different type, are we to account for the fact that the embryo of any one of the descended species has come to be developed in a mode peculiar to itself and differing from the mode in which the embryo of the ancestral stock was developed? The law of sexual union, under which the individuals of the supposed ancestral stock were multiplied, must have imposed on that species an invincible necessity of reproducing in its offspring the same type that constituted the peculiar organism of the parents, whether these parents were or were not the fittest survivors of their race after the severest struggle for existence which they may have had to undergo. If the pair, or the male of that pair, has in the course of that struggle acquired a new organ, or more completely developed an old one, before the act of procreation takes place, how is it that the ovum is developed into the fœtus, and the fœtus into the newly born infant, in an invariable mode peculiar to the species to which the parents belonged? Why did not the same causes of variation which are supposed to have changed the ancestral type into one of a new and entirely distinct character, also vary the mode of fœtal development? When and how did the new organs become fixed in the type which the parents have transmitted to the offspring? And if they became so fixed in the germ which was formed out of the cellular substance contributed by each of the parents, why do we find in every known species participating in this process of reproduction a uniform mode of embryologic development peculiar to the species, and exhibiting its own suppressions and substitutions of organs, irrespective of any newly acquired peculiarities in the individual structures of the parents?
The believer in special creations has to answer no such questions as these. His hypothesis assumes the creation of a pair of animals of a certain distinct species; a law of procreation and gestation common to a vast multitude of organisms; and a law of embryologic growth peculiar to each species. Whatever peculiarities of structure may have been possessed by the immediate parents of any individual of any one of these different species—peculiarities which did not separate the parents from their race, but only made them the fittest survivors of their race—those peculiarities would or would not descend to their immediate offspring, according to varying and very inappreciable circumstances. But that which constituted the special type of the race, and especially that which constituted its peculiar mode of development during the embryonic stage, would remain unaffected by these incidental and accidental peculiarities of the parents, because, from all that we can discover, that special type was impressed upon the embryo at the earliest stage of its existence, and constituted the living model that was to be developed into the perfect animal of that species, by a law which placed it beyond the influence of any adventitious and non-essential advantages which the male or female parent may have acquired over other individuals of the same race. So that, if the postulate of a special creation of species be assumed as the groundwork of the reasoning, we have to go through with no speculations about a common ancestral stock of all the species, and we have to account for no phenomena that are exposed to chances which might have produced very different results from those which are open to our observation, and results of which we can predicate nothing with any degree of certainty. On the hypothesis of the special creation of a species, and an aboriginal pair of each species, with all that this implies, we can with a high degree of certainty predicate most of the phenomena that we have to observe, and more especially so much of the phenomena of embryologic growth of the different species as are open to our investigation after the life of both mother and embryo has become extinct.
It only remains for me to give to this reasoning a concrete application. Take the case made use of by Mr. Spencer in the passage above cited—that of the "allantois," a vascular membrane, which is said to be in the mammalian embryo homologous with one which in the higher oviparous vertebrates, such as the birds and reptiles, replaces what was at first a breathing apparatus, and becomes for them, during the rest of embryonic life, a sort of lung, or an organ that aërates the blood until the permanent respiratory organs come into play. In the mammalian embryo, the first appliance for aërating the blood is described as a system of vessels distributed over the area vasculosa, and like that which is first observable for the same purpose in fishes. But, as the mammalian embryo continues to grow, a change takes place. There buds out from it the vascular membrane called the "allantois," which is substituted in the place of the first aërating apparatus. Then a further change takes place, as between the higher oviparous vertebrates and the mammalian vertebrates. In the former, the "allantois" continues to perform the breathing function through the rest of the embryonic life. In the mammalian vertebrates it undergoes two changes: In the implacental mammals, it aborts, having no function to discharge; in the placental mammals it becomes modified into another organ, namely, that which serves to convey nutrition from the mother to the offspring. After birth, it is of course ended.
Now, the reasoning, or rather the assertion, that these substitutions are unaccountable as the results of design, appears to me to be singularly inconclusive. It is quite illogical, according to all philosophic meaning of design as applied to the works of the Creator, or to the works of nature, if that term is preferred, to argue that a particular object could have been better accomplished directly, than by a metamorphosis of an organ from one function to another, or by substitution. The metamorphosis, or substitution, which in such cases we find in nature, is of itself the very highest evidence that the indirect method was the best, if we admit the idea of a Creator, because it was the method chosen by a being of infinite perfections for reasons which we may not be able to discover, but which we must presume to have existed, if we concede that hypothesis of attributes which "design" in this case necessarily implies. But how are these metamorphoses and substitutions any more accountable upon the supposition that the mammalian type arose by generation out of the lower vertebrate types which in their embryonic life exhibited the same changes? The doctrine or theory of evolution does not account for them at all; for, while the doctrine supposes, as matters of pure theory, that there were certain states through which the mammalian embryo passed, which represented more or less distinctly those which it had in common with its assumed remote ancestors, the lower vertebrata, it does nothing more than to suggest the theoretical idea that the mammalian embryo came to develop these subsidiary organs in the mode in which they were developed in the embryo of the lower vertebrata, because it was descended from the lower vertebrata. The varying states through which the embryo passed from the lower vertebrata to the mammalian type, are all hypothetical, and there is, therefore, no basis of fact on which to rest the belief in a common mode of development, as resulting from a connection of lives with lives between the mammalian type and the types of birds, reptiles, or fishes.
On the other hand, the hypothesis of the special creation of a species implies the simple fact of a designed process of embryonic development for each species, with substitutions of organs and changes of function in certain organs peculiar to that species; a fact which may well consist in a certain parallelism in the different metamorphoses, and a preservation of the same unvarying changes in the development of each separate embryo. Why these changes should exist, we can not tell; but their existence is very strong proof that they were designed, or made to take place, for some reason, if we admit the hypothesis of a Creator. For that hypothesis, we must look to a wider class of facts, and to the whole phenomena of nature.
4. We now come to the argument from distribution. This is one of the weakest of the indirect supports of the doctrine of evolution; but, as it is much relied upon, it must be stated with all the force that it is supposed to have. The facts that are relied upon are these: When we survey the whole surface of the globe, so far as it is known to us, we find, in the first place, that the areas which have similar conditions (of soil and climate), and sometimes, where the areas are nearly adjacent, are occupied by quite different faunas. On the other hand, it is said that areas remote from each other in latitude, and contrasted in soil and climate, are occupied by closely allied faunas. The inference drawn is, that there is no manifest predetermined adaptation of the organisms to the areas, or habitats, in which they are found, because we do not find that like organisms are universally or generally found in like habitats, nor very unlike organisms in very unlike habitats. The conclusion is, that the facts of distribution in space do not conform to the hypothesis of design. In other words, the different animals found in different regions were not specially designed for those regions, but some of them have extended into regions of a different character; and when the regions are very unlike there are not found very unlike organisms, but there is a general similarity, or a less extensive variety. There is said, also, to be another important fact, namely, that "the similar areas peopled by dissimilar forms are those between which there are impassable barriers; while the dissimilar areas peopled by similar forms, are those between which there are no such barriers." Hence is drawn the conclusion that "each species of organism tends ever to expand its sphere of existence—to intrude on other areas, other modes of life, other media."[88] A good deal of aid is supposed to be derived for this argument respecting animal life by analogies drawn from the vegetable kingdom; but I can not help thinking that there is much caution to be observed in formulating such analogies into a law of universal application, or into one that relates to the existence of animal organisms. The origin, the multiplication, and the spread of animals involve a principle of life, organization and development which is very different in some important respects from that which obtains in the vegetable world. But, without laying any stress upon this distinction, and without intending to deprive the argument for animal evolution of any aid which it can derive from such supposed analogies, I pass to the specific argument respecting animal distribution. The argument is this: Races of organisms become distributed over different areas, and also through different media. They are thrust by the pressure of overpopulation from their old into new habitats, and as they diverge more widely in space they undergo more and more modifications of structure, by reason of the new conditions on which they enter. Thus, these powerfully incident forces, the new conditions on which the migrating races enter in new regions, vary the structure which they originally brought with them, and which descended to them from the common stock of which they were modified descendants. The widest divergences in space, under such circumstances, will indicate the longest periods of time during which these various descendants from a common stock have been subject to modifying conditions. There will, therefore, come to be, it is said, among organisms of the same group, smaller contrasts of structure in the smaller areas; and, where the varying incident forces vary greatly within given areas, the alterations will become more numerous than in equal areas which are less variously conditioned: that is to say, in the most uniform regions there will be the fewest species, and in the most multiform regions there will be the most numerous species. These hypotheses are said to be in accordance with the facts of distribution in space.[89]
But there are also facts of distribution through different media. The meaning of this is, that, whereas all forms of organisms have descended from some primordial simplest form, which inhabited some one medium, such as the water, its descendants, by migration into some other medium or other media, underwent adaptations to media quite unlike the original medium. In other words, the earth and the air have been colonized from the water. Numerous facts are adduced in support of this conclusion, which are thus summarized:
There are particular habitats in which animals are subject to changes of media. In such habitats exist animals having, in various degrees, the power to live in both media, consequent on various phases of transitional organization. Near akin to these animals, there are some that, after passing their early lives in the water, acquire more completely the structures fitting them to live on land, to which they then migrate. Lastly, we have closely-allied creatures like the Surinam toad and the terrestrial salamander, which, though they belong by their structures to the class Amphibia, are not amphibious in their habits—creatures the larvæ of which do not pass their early lives in the water, and yet go through these same metamorphoses! Must we, then, think that the distribution of kindred organisms through different media presents an insurmountable difficulty? On the contrary, with facts like these before us, the evolution-hypothesis supplies possible interpretations of many phenomena that are else unaccountable. Realizing the way in which such changes of media are in some cases gradually imposed by physical conditions, and in other cases voluntarily commenced and slowly increased in the search after food, we shall begin to understand how, in the course of evolution, there have arisen those strange obscurations of one type by the externals of another type. When we see land-birds occasionally feeding by the water-side, and then learn that one of them, the water-ouzel, an "anomalous member of the strictly terrestrial thrush family, wholly subsists by diving—grasping the stones with its feet and using its wings under water"—we are enabled to comprehend how, under pressure of population, aquatic habits may be acquired by creatures organized for aërial life; and how there may eventually arise an ornithic type, in which the traits of the bird are very much disguised.
Finding among mammals some that, in search of prey or shelter, have taken to the water in various degrees, we shall cease to be perplexed on discovering the mammalian structure hidden under a fish-like form, as it is in the Cetacea. Grant that there has even been going on that redistribution of organisms which we see still resulting from their intrusions on one another's areas, media, and modes of life, and we have an explanation of those multitudinous cases in which homologies of structure are complicated with analogies. And while it accounts for the occurrence, in one medium of organic types fundamentally organized for another medium, the doctrine of evolution accounts also for the accompanying unfitness. Either the seal has descended from some mammal which, little by little, became aquatic in its habits, in which case the structure of its hind-limbs has a meaning; or else it was specially framed for its present habitat, in which case the structure of its hind-limbs is incomprehensible.[90]
Along with these phenomena of distribution in space and in medium of life, we have the further element of distribution in time; the facts of which are admitted, however, to be too fragmentary to be conclusive either for or against the doctrine of evolution. Still it is claimed that there is one general truth respecting distribution in time, which is "profoundly significant, namely, that the relations between the extinct forms of life, found by geological exploration, and the present forms of life, especially in each great geographical region, show in the aggregate a close kinship, and a connection which is in perfect harmony with the belief in evolution, but quite irreconcilable with any other belief. As Mr. Darwin has expressed it, there is 'a wonderful relationship in the same continent between the living and the dead.'"[91]
The argument from distribution is thus summed up by Mr. Spencer:
Given, then, that pressure which species exercise on one another, in consequence of the universal overfilling of their respective habitats—given the resulting tendency to thrust themselves into one another's areas, and media, and modes of life, along such lines of least resistance as from time to time are found—given, besides the changes in modes of life hence arising, those other changes which physical alterations of habitats necessitate—given the structural modifications directly or indirectly produced in organisms by modified conditions—and the facts of distribution in space and time are accounted for. That divergence and redivergence of organic forms, which we saw to be shadowed forth by the truths of classification and the truths of embryology, we see to be also shadowed forth by the truths of distribution. If that aptitude to multiply, to spread, to separate, and to differentiate, which the human races have in all times shown, be a tendency common to races in general, as we have ample reason to assume, then there will result that kind of relation among the species, and genera, and orders, peopling the earth's surface, which we find exists. Those remarkable identities of type discovered between organisms inhabiting one medium, and strangely-modified organisms inhabiting another medium, are at the same time rendered comprehensible. And the appearances and disappearances of species which the geological record shows us, as well as the connections between successive groups of species from early eras down to our own, cease to be inexplicable.[92]
Passing by what is here said of the aptitude of the human race to multiply, to spread, to separate, and to differentiate—an aptitude which has never resulted in the production of an essentially different animal, or in anything but incidental variations within the limits of the same species—I propose now to apply to this argument from distribution a test which seems to me to be a perfectly fair one, and one which it ought to be able to encounter. If the theory that the different species of animals now known to us have been evolved successively by descent from some primordial simplest form through modifications induced by change of habitation, of medium of life, and accumulation of new structures occurring through an immense period of time, be a sound hypothesis, the process which has evolved superior out of inferior organizations ought, in consistency with itself and with all its supposed conditions, to be capable of being reversed, so as to lead to the evolution of inferior out of superior organisms. For, although the doctrine of evolution has thus far been applied only to facts which are supposed to show an ascent in the scale of being, the argument ought to be equally good for a descent in the scale of being, provided we take care to include all the elements and causes of a change of structure, mode and medium of life, and the necessary element of time, in the operation of the process. The imaginary case that is about to be put shall include all the elements of the evolutionary hypothesis, and will serve to test at least the rationality of that theory.
Let it be supposed, then, that there was a period in the history of this earth when the whole human race, however it originated, was confined to an island, thousands of miles from any other land. This race of men adapted to a life in one medium, the air, may be supposed to have so far advanced in the ruder arts of hunting and fishing, and in the higher art of tillage, as to be able for many generations to support life by what the sea and the land would put within their reach, and by the product which their rude agriculture could extract from the soil, or which the soil would spontaneously yield. But as the centuries flow on, the population begins to press upon the resources of the territory, and the struggle for life becomes very great. At length a point is reached where the supply of food from the land becomes inadequate to sustain the population, and what can be made up from the sea will not supply the deficiency. The population will then slowly decrease, but, while this decrease goes on, there comes in a disturbing cause which will prevent any adjustment of the supply of food to the diminished number of the consumers. The sea begins by almost imperceptible but steadily progressing encroachments to diminish the area of dry land; a change of climate reduces the number of other animals available for human food, and reduces the productive capacity of the earth. Then ensues that struggle for existence which is supposed to entail changes of medium of life, and to induce transformations of structure. The conditions of existence have become wholly changed. The wretched descendants of a once comparatively thriving race are dwelling on a territory which has become a marsh. They have no means of migrating to another territory; they can only migrate to another medium. They begin by feeding exclusively on what the water will afford. They pass their lives in the pursuit of a prey which lives only in the water, and in this change of life they acquire or develop organs adapted to the new condition, organs which, in such miserable reproduction of their own species as can go on, they transmit to their offspring. Modifications upon modifications accumulate in this way through untold periods of time, until at last a new aquatic or a new amphibious creature is formed, and the difference between that creature and his remote ancestral human stock is as great as that between man and the seal, or between man and any fish that swims. Still, there will be peculiarities of structure retained, which might lead any inhabitant of another world, alighting on this globe and undertaking to trace the origin of this new creature, to the supposition that he was akin to a race of men whose fossil remains he might find buried in some stratum beneath the marsh which was the last habitat of this unfortunate race, when it had all the characteristics of its original type.
Is it conceivable that this transformation could take place? Could such a condition and situation result in anything but the utter extinction of the human race, or, in other words, in an absolute break? Could there be any modifications exhibited by the last survivors of that race other than those which are familiar to us among the varieties of the human species which have never separated themselves from their race, and between whom and their ancestral stock, wherever it was originally placed on this globe, we recognize no fundamental difference of structure, whatever may have been the changes of habitat or conditions of life? Yet the conditions and elements of this imaginary case, which is simply the process of evolution reversed, are just what the evolution theory assumes as the causes of that modification which proceeds from a lower to a higher organism; and whatever may be said of the tendency, through "the survival of the fittest," to evolve higher out of lower forms of animal life, if we allow time enough for the process, there is no reason, in the nature of things, why corresponding conditions should not lead to a degradation as well as to an elevation in the scale of beings. There is, however, one reason why no such potency should be ascribed to the conditions, either in respect to the one result or the other. That reason is that all such causes of modification, either in the ascending or the descending scale, are so limited in their effects that distinct beings can not be rationally predicated as their product, whereas the power of the Infinite Artificer to give existence to distinct beings is absolutely without limit. If naturalists would turn their attention to the limitations upon the power of all such causes as those which are supposed to work in the process of evolution, and would give us the explanations to which those limitations point, in those cases of local variation which are exhibited by animals that can clearly be traced to a parent form, they would not be compelled to resort to a sweeping theory that refuses all force to any hypothesis but its own.
But now let us go a step further in this imaginary case. Let us suppose that after this new creature, fish or amphibian, descended from the human race, has inhabited the water surrounding the ill-fated island for a million of years, another great change takes place. The water begins to recede from the land by gradations as slow as those by which in the former period it encroached. The land rises from the low level to which it had sunk, by volcanic action. Forests spring up upon the sides of mountains. The soil becomes firm; verdure overspreads the fields; the climate grows genial; the wilderness blossoms as the rose. Allow another million years for this restoration of the territory to an inhabitable condition. Slowly and in an unbroken series of generations the aquatic creatures, descended from the ancient human inhabitants of the island, emerge from the sea and betake themselves to the land. Modifications upon modifications accumulate, new organs are acquired; the survival of the fittest perpetuates them; the animals ascend in the scale of being, until the human type is again evolved out of the degraded descendants of the population which two millions of years previously dwelt as men upon the island, and carried on in some primitive fashion the simpler arts of human life. Is not this just as supposable as the evolution of the human race out of some lower form of organism? Are not all the elements—time, migration from one medium to another, change of conditions, and what is supposed to lead to the production of different organisms—just as powerful to produce the inferior out of the superior as to produce the superior out of the inferior, and so on interchangeably? The answer in each case is, that all such causes of modification in the animal kingdom are limited; that when once a distinct species is in existence, we have no evidence that it loses its distinct type or merges itself in another, although the earth may be full of evidence that types which formerly existed are no longer among the living organisms.
[CHAPTER VII.]
Mr. Spencer's agnosticism—His theory of the origin of religious beliefs—The mode in which mankind are to lose the consciousness of a personal God.
In a former chapter I had occasion to advert to one of Mr. Spencer's favorite dogmas, namely, the impossibility of an intellectual conception of creation, which he thinks is made apparent by the statement that one term of the relation, the thing created, is something, and the other term of the relation, that out of which the thing was created, is nothing. When I wrote the chapter in which I commented on this extraordinary kind of logic, I felt a little disposed to apologize to my readers for answering it. I had not then met with the fuller statement of Mr. Spencer's peculiar agnosticism which I am now about to quote. The controversy recently carried on between Mr. Spencer and Mr. Harrison was closed by the former in an article entitled "Last Words about Agnosticism and the Religion of Humanity," which appeared in the "Nineteenth Century" for November, 1884. This drew my attention to a passage in Mr. Spencer's "Essays," which he has reproduced in his late article for the purpose of repeating his position against some of the misrepresentations which he complains had been made of it by Mr. Harrison. I have nothing to do with the controversy between these two gentlemen, or with any of the arguments which Mr. Spencer's opponents, be they churchmen or laymen, have employed against him. I take the passage as he has quoted it from his "Essays," for the purpose of making his agnostic views the subject of a more extended commentary than I had bestowed on them in my previous chapter, in writing which I had before me only a passage contained in his "Biology." There is no occasion, however, for altering a word of what I had previously written; for, on a comparison of his position as given in the "Biology," and that given in the "Essays," it appears very plainly that I had not misunderstood him. But as the passage in the "Essays" displays much more fully the peculiar reasoning by which he supports his agnostic philosophy, I should not do justice to him or to my readers if I did not notice it. The passage is the following:
Always implying terms in relation, thought implies that both terms shall be more or less defined; and as fast as one of them becomes indefinite, the relation also becomes indefinite, and thought becomes indistinct. Take the case of magnitudes. I think of an inch; I think of a foot; and having tolerably definite ideas of the two, I have a tolerably definite idea of the relation between them. I substitute for the foot a mile; and being able to represent a mile much less definitely, I can not so definitely think of the relation between an inch and a mile—can not distinguish it in thought from the relation between an inch and two miles, as clearly as I can distinguish in thought the relation between an inch and one foot from the relation between an inch and two feet. And now, if I endeavor to think of the relation between an inch and the 240,000 miles from here to the moon, or the relation between an inch and the 92,000,000 miles from here to the sun, I find that while these distances, practically inconceivable, have become little more than numbers to which I frame no answering ideas, so too has the relation between an inch and either of them become practically inconceivable. Now this partial failure in the process of forming thought relations, which happens even with finite magnitudes when one of them is immense, passes into complete failure when one of them can not be brought within any limits. The relation itself becomes unrepresentable at the same time that one of its terms becomes unrepresentable. Nevertheless, in this case it is to be observed that the almost blank form of relation preserves a certain qualitative character. It is still distinguishable as belonging to the consciousness of extensions, not to the consciousnesses of forces or durations; and in so far remains a vaguely identifiable relation. But now suppose we ask what happens when one term of the relation has not simply magnitude having no known limits, and duration of which neither beginning nor end is cognizable, but is also an existence not to be defined? In other words, what must happen if one term of the relation is not only quantitatively but also qualitatively unrepresentable? Clearly in this case the relation does not simply cease to be thinkable except as a relation of a certain class, but it lapses completely. When one of the terms becomes wholly unknowable, the law of thought can no longer be conformed to; both because one term can not be present, and because relation itself can not be framed ... In brief, then, to Mr. Martineau's objection I reply that the insoluble difficulties he indicates arise here, as elsewhere, when thought is applied to that which transcends the sphere of thought; and that just as when we try to pass beyond phenomenal manifestations to the Ultimate Reality manifested, we have to symbolize it out of such materials as the phenomenal manifestations give us; so we have simultaneously to symbolize the connection between this Ultimate Reality and its manifestations, as somehow allied to the connections among the phenomenal manifestations themselves. The truth Mr. Martineau's criticism adumbrates is that the law of thought fails where the elements of thought fail; and this is a conclusion quite conformable to the general view I defend. Still holding the validity of my argument against Hamilton and Mansel, that in pursuance of their own principle the Relative is not at all thinkable as such, unless in contradiction to some existence posited, however vaguely, as the other term of a relation, conceived however indefinitely; it is consistent on my part to hold that in this effort which thought inevitably makes to pass beyond its sphere, not only does the product of thought become a dim symbol of a product, but the process of thought becomes a dim symbol of a process; and hence any predicament inferable from the law of thought can not be asserted.[93]
In judging of the soundness of this reasoning, the first thing to be done is to determine what we are thinking about when we compare the finite with the infinite, or when, to put it as Mr. Spencer does, we have two terms of a relation, one of which is a thing open to the observation of our senses, and the other of which lies beyond them. In this case, does all thinkable relation lapse, or fade into an impossible conception, when we undertake to conceive of that which lies beyond what we see? Does the relation between the two supposed terms cease to be a continuously existing relation? Or, to quote Mr. Spencer's words, is it true that "insoluble difficulties arise, because thought is applied to that which is beyond the sphere of thought"?
We must be careful to distinguish between the "insoluble difficulties" which arise out of the imperfection of language adequate to give a formal description of a thing, and which may lead us to suppose ourselves involved in contradictions, and the "insoluble difficulties" which may arise out of the impossibility of having a mental representation of that thing. The latter is the only difficulty about which we need concern ourselves; and the best way to test the supposed difficulty as an insuperable one is to take one of the illustrations used by Mr. Spencer—the idea of space. We measure a foot or a mile of space, and then compare it with the idea of endless or (to us) immeasurable space. Figures afford us the means of expressing in language a certain definite number of miles of space, but, beyond the highest figures of which we have definite forms of expression, we can not go in definite descriptions of space. But when we have exhausted all the expressions of number that our arithmetical forms of expression admit, does it follow that we can not conceive of extension beyond that number? On the contrary, the very measure which we are able to express in figures, to a certain extent, in regard both to space and time, gives us the idea of space and time, and shows us that there must be an extension of both beyond and forever beyond the portion of either which language will allow us definitely to describe. This to us immeasurable and indescribable extent of space or time becomes a thinkable idea, because we are all the while thinking of space or time, whether it is a measurable portion of either, or an immeasurable and endless existence.
Take as another illustration a purely moral idea. We know that there is a moral quality which we call goodness; an attribute of human character of which we have a clear conception, and which we can describe because it is manifested to us in human lives. When we speak of the moral phenomena to which we give the name of goodness, or virtue, all mankind know what is meant. But human virtue is imperfect, limited, measurable. It may be idealized into something approaching to perfection, but the ideal character thus drawn must fall short of perfection if it is made consistent with human nature. But from human character we derive the idea of goodness or virtue as a thinkable idea. Is the idea of absolute perfection of this quality any less thinkable? Absolute perfection of moral character can not be described by a definition; but, as we know that a measurable goodness which we can describe exists, wherein consists the failure or lapse of a thinkable relation, when we reason from that which exists in a measurable degree to that which transcends all degree? We are all the while thinking of goodness or virtue, whether we think of it as limited and imperfect, or as unlimited and perfect. Take another quality—power. We know that there is such a quality as power, wielded by human beings, and guided by their will. But human power is limited, measurable, and therefore finite. When we reason from the finite power of man to the idea of an infinite and immeasurable power held and wielded by another being, do we strive to conceive of something that is unthinkable because we can only say that the power of that other being is without limit? We are all the while thinking of power, of the quality of power, whether we think of it as measurable or immeasurable. All qualities and all faculties which are manifested to us in a limited degree, when we conceive of them as unlimited and without degree, become proofs that what exists in a measurable and limited degree may exist without limitation and without degree. Although we can only define the finite, the infinite is not the less a subject of true thinking, because, whether we think of the finite or the infinite, what we are all the time thinking about is the quality of power, and nothing else. In the one case it is limited, in the other it is unlimited, but it is all the time the quality itself of which we are thinking.[94]
But now let us attend a little more closely to Mr. Spencer's grand objection to this mode of thinking. The reader will be careful to note that what he needs to ascertain is, whether Mr. Spencer's agnostic theory is really sound. To test it, he must inquire just where the supposed difficulty lies. Translated into other language, Mr. Spencer's position is this: In order to keep within the sphere of possible thought, there must be a definite relation between any two ideas, which must not lapse, but the two ideas must be equally capable of mental representation. When one term of the relation is an idea capable of mental representation, as when we think of a thing cognizable by our senses, and the other term of the relation is something that lies beyond them, the law of thought, according to Mr. Spencer, can no longer be conformed to; the relation lapses; the latter term can not be present to the mind; we pass out of the sphere of thought into that which can not be a subject of thought, the unknown and the unknowable. What takes place in this process is assumed to be this: We take certain phenomenal manifestations which we are able to observe and to describe. Out of the materials which these phenomenal manifestations give us, we "symbolize the Ultimate Reality." We do this, by arguing from the phenomenal manifestations which convince us of the existence of a being whom we know and can observe, to the existence of a being in whom we "symbolize" qualities and faculties which the phenomenal manifestations show us to belong to human beings. At the same time we represent to ourselves by the same symbolizing process a connection between the Ultimate Reality and its manifestation, which is allied to the connections among the phenomenal manifestations which we observe in man, or in nature. In other words, we reason from what we see and can measure and describe, to that which we can not see or describe, and we end in a term of the relation which can not be present to the mind, and thus no thinkable relation can be framed.
Whatever may be said of the rational force of the evidence derived from phenomenal manifestations which we can observe when we reason about other phenomenal manifestations which we can not measure, it can not be said that we have reached a term in the relation that is beyond the sphere of thought. What I understand Mr. Spencer to mean when he speaks of "symbolizing" out of the materials which the phenomenal manifestations give us, may be a process liable to error, but it does not involve or lead to the "insoluble difficulties" that are supposed to arise. For example, when, from the existence and power of man, a being whom we know, and whose phenomenal manifestations lead us to a knowledge of his limited faculties, we reason to the existence of a being whose faculties are boundless, we may be in danger of conclusions into which imperfection will find its way; but it certainly is not true that in thinking of unlimited power or goodness, or any other unlimited quality, we transcend the sphere of thought. When we have expressed in figures the greatest measurable idea of space that can be so expressed, what do we "symbolize," when we say that beyond that measured space there stretches a space that we can not measure, and to which there is of necessity no limit? Does a thinkable relation cease to exist, because one of the terms is immeasurable to us? As soon as we have formed an idea of a measurable portion of space, we necessarily have an idea of endless and immeasurable space; and in this deduction we have employed no "symbol" formed out of the materials which the measurable manifestations have given us. We have simply reached a conclusion that is inevitable. We are all the while thinking of space, whether it is definite space that we can measure, or indefinite space that we can not measure.
When the moral and intellectual qualities of men constitute one part of the phenomenal manifestations which we adopt as the basis of reasoning to the existence of God, we are in danger of assigning to that being attributes of character which would be far from perfection. Nearly all the religions that have existed, and of which we have much knowledge—perhaps all of them but one—have displayed more or less of this tendency. It is only necessary to instance the Hebrew Scriptures, for there are parts of that narrative in which the Deity is represented as actuated by something very much like human passions and motives, and these representations are among the hardest things to be reconciled with the idea that those books were inspired writings. Every one knows with what effect these passages of the Hebrew Scriptures are used by those who reject both the Old and the New Testaments as inspired books. But is philosophy therefore to shrink from the use of materials with which the world is filled, and which lead to the conception of a being of infinite faculties and perfect goodness? Grant all that may be said of the stupid and fatal errors into which men have been led by likening the Deity to man: there remains a vast store-house of materials on which to reason to the existence of God, which philosophy can not afford to reject, which can be freed from the peril that has often attended their use, and which involve no "symbolizing" process of the kind which Mr. Spencer imagines.
Let us again translate Mr. Spencer's language, and endeavor to analyze his position. There is, he says, a law of thought, which requires and depends upon certain elements of thought. By "thought" he means a conceivable idea, or one which the mind can represent to itself. By the elements of thought he means, I suppose, the data which enable us to have an idea of a product. The process of reaching this product is supposed to be conducted according to a law which requires us to have the data or elements by which the process is to be conducted. For example, in the process of reaching an idea of definite space as a product of thought, we take certain data or elements, by conceiving of space as divided into successive portions to which we give the name of feet or miles. The product of thought is the number of feet or miles into which we divide the definite space of which we form an idea. In this process we have conformed to Mr. Spencer's law of thought, because we have data or elements by which to conduct the process and reach the product.
But now, says Mr. Spencer, when thought undertakes to have as its product the idea of endless space, it makes an effort to pass beyond its sphere; the elements of thought fail, and therefore the law of thought fails; the product is nothing but a dim symbol of a product; the process becomes nothing but a dim symbol of a process; and no predicament, that is, no fact, is here inferable from the law of thought as a fact or predicament that can be asserted. But what, in the case supposed, is the fact or predicament that is asserted, when we speak or think of endless space, or of space that transcends all our powers of measurement? Is it correct to say that the law of thought fails, because we can not express endless space in feet or miles? Is it true that we have only "symbolized" the product of endless space out of the data or elements of measurable space? Here it is necessary to inquire what the learned philosopher means by "symbolizing" a product or a process. I understand him to mean, in the case supposed, that whereas in reference to the idea or product of a measurable space we have certain data or elements out of which to form that idea, when we undertake to think of endless space we transfer the notion of a measurable space to that of which no measure can be predicated, and therefore we can have no conception of endless space, but only a "formless consciousness of the inscrutable." Let us see if this is sound.
Take as a convenient idea of a measurable space the 92,000,000 miles from the earth to the sun, and lay it down on paper. If, after having measured this space, we could transport ourselves to the sun, we could extend the line in the same direction beyond the sun, by laying down a further measurement of 92,000,000 miles from the sun to any object that we could observe beyond the sun. This process we could repeat indefinitely and forever, if we could be successively removed to the different stages at each point of departure. But when an aggregate of such multiplied measurements had been reached greater than could be expressed in figures, we should still have the intellectual power of thinking of an extension of space indefinitely beyond that which we have measured. Nothing would have failed us but the power of expressing in figures the endless extent of space which lies beyond the utmost limit that we can so express.
It is precisely here, as I suppose, that Mr. Spencer's "symbolizing process" and his "symbolized product" come in. We have taken as the elements of thought the idea of successive measurements of space; and the law of thought permits us to have as a definite product whatever extent of space can be marked off by such successive measurements. But when we undertake to have, as the product of thought, a consciousness, or conception, of endless space, we have merely used the idea of a definite space as a "symbol," or simulacrum, of that which is without form, and is only a "formless consciousness of the inscrutable"—whatever that means.
Let us see what has happened. The power of measuring, or describing in form, a definite extent of space, has given us an idea of space. The product of our thought is extension between two given points. Such extensions must be capable of indefinite multiplication, although we can not express in figures an indefinite multiplicand. The product is then something beyond what we can express in a definite form; but is it beyond the sphere of thought? What is it? It is an idea which we deduce by a strict process of reasoning, and to which we do not need to give and can not give expression in figures. The process of reasoning is this: Measurement has given us an idea of space; our faculty of applying measurement is limited; but our faculty of conceiving of space through which we could go on forever multiplying such measurements, if we had the means, is certainly a faculty of which all men are conscious who are accustomed to analyze the processes of thought. In this process we may reach that which in one sense is "inscrutable." It is inscrutable, inasmuch as we can not understand how eternity of space or time came to exist. Our experience of phenomena enables us to have an idea of space and time, and from the fact that we have measured off portions of space or time, we deduce the fact that there must be an eternity of both. It is immaterial whether we call this a "symbolizing" process, or call it something else. The product is an idea at which we arrive by a strict process of reasoning. Eternity of space or time is an inscrutable idea, when we attempt to inquire how it came to be. That it exists, is an idea from which the human mind can not escape, and which it reaches by a perfectly sound deduction. We are all the while thinking of space or time, whether we are thinking of that which is measurable, or of that which is immeasurable.
I now come to a passage in Mr. Spencer's recent article which it is necessary to attempt to explain to the unlearned reader, and to bring it, if possible, within the reach of ordinary minds. This passage, which follows in his recent article immediately after his quotation from his "Essays," is the following:
Thus, then, criticisms like this of Mr. Martineau, often recurring in one shape or other, and now again made by Mr. Harrison, do not show the invalidity of my argument, but once more show the imbecility of human intelligence when brought to bear on the ultimate question. Phenomenon without noumenon is unthinkable; and yet noumenon can not be thought of in the true sense of thinking. We are at once obliged to be conscious of a reality behind appearance, and yet can neither bring this consciousness of reality into any shape, nor can bring into any shape its connection with appearance. The forms of our thought, molded on experience of phenomena, as well as the connotations of our words formed to express the relations of phenomena, involve us in contradictions when we try to think of that which is beyond phenomena; and yet the existence of that which is beyond phenomena is a necessary datum alike of our thoughts and our words. We have no choice but to accept a formless consciousness of the inscrutable.
Some definitions must now be given. The word "phenomenon" has become naturalized in our English tongue. Derived as a noun from the Greek verb Φαίνομαι, to appear, it means anything visible; whatever is presented to the eye by observation or experiment, or what is discovered to exist; as the phenomena of the natural world, the phenomena of the heavenly bodies, of terrestrial substances, the phenomena of heat and color.[95] In this application the word denotes what appears to us, or what we discover by our senses. It is also used, in the plural, more loosely, to denote occurrences or things which we observe to happen; as when, speaking of physical occurrences, we mean physical facts the happening of which we observe. Moral phenomena, on the other hand, are the appearances exhibited by the action of mind.
The word noumenon has not become naturalized in our language, and did not exist in Greek.[96] It can convey no intelligible meaning to common readers without tracing its derivation, and when it is analyzed we can attribute to it no meaning but a purely arbitrary one, even if we can arrive at that arbitrary signification. In fact, it is a word made by and for the school of Kant. Its first syllable is the Greek noun νοῦς or νόος, which corresponds to our English word thought or intelligence. The Greek verb νοέω, to think, was primarily used as I perceive; the act of the mind in seeing. This idea was distinct from εἴδω, which conveyed the plain meaning of I see. But so subtile were the Greeks in their use of words, that εἴδω was sometimes used specifically to mean to see with the mind's eye, or, as we sometimes say, to realize, or to have a mental perception of. In the Greek use of the two words νοεω and εἴδω, no distinction was made between phenomenon and noumenon. To a cultivated Greek, phenomenon would mean something perceived, and noumenon, if he had possessed the word, would have had the same meaning. He would have used the two words interchangeably, to express either sight by the visual organs or mental perception. Mr. Spencer uses them as if they meant different things, as if phenomenon were something different from noumenon. But noumenon, according to its derivation (for it is coined as the participle of nοεων), means a thing, subject, or object, perceived by the mind. The root idea is mind-action, the verb νοεω meaning to do what the mind does in apprehending a subject or object. So that the derivation of noumenon does not help us to understand the Kantian or Spencerian use of the word.
As this use of the word is, then, purely arbitrary, we must try to understand, as well as we can, what this arbitrary meaning is. As well as I can fathom it, in contrast with phenomenon, the meaning is that phenomenon is something that we see, and noumenon is the ghost or double of what we see. We see a thing with our eyes; but our mind does not see it—it perceives its ghostly double. This is noumenon.
Penetrating, or trying to penetrate, a little further into Mr. Spencer's meaning, it would seem that when he says that phenomenon without noumenon is unthinkable, he means that, although we can see a thing with our corporeal eye, we can not think of it without the mental act of seeing its image with the mind's eye; and then he adds that noumenon can not be thought of in the true sense of thinking, because noumenon is an abstraction or a mere ghost of a subject or an object.
What is all this but a kind of play upon words? We are so constituted that the impressions which a thing external to us produces upon our nerves of perception are instantly transmitted to the brain, and the mind has an instantaneous perception of that object. The phenomenon which we see with our eyes, or become sensible of by touch, thus becomes a thing perceived by the mind, and when we think of it we do not think of its ghost, but we think of the thing itself. Did Laura Bridgman, who had neither eye-sight nor hearing nor speech, but who acquired all her ideas of external objects by the sense of touch, conceive of a round or a square, a rough or a smooth surface, by contemplating the ghost or double of what she touched? And had she no thinking in the true sense of thinking, because the double, or imago of the thing which she touched—the so-called noumenon—was at once necessary to her mental perception, and yet could not be thought of without seeing the object by the corporeal eye? She had no corporeal eye in which there was any vision. All her mental perceptions of external objects were acquired by the sense of touch alone; and we may well believe that she did not need the supposed noumenon to give her an idea of phenomenon. She perceived many phenomena by the simple transmission to her brain, along her nerves of touch, of the impressions produced upon them by external objects; and there is every reason to believe that many of her perceptions were as accurate and true as those which we derive from all our senses. We may now dismiss Mr. Spencer's distinction between phenomenon and noumenon as a distinction quite needless for the elucidation of what takes place in thinking of that which is behind appearance, and may proceed with the discussion of what remains of the passage above quoted.
At the risk of wearying by repetition, I will again resort to the illustration before employed, and will again describe how we reach the conception, for example, of endless space. According to Mr. Spencer, space, or extension, as a thinkable idea, or a subject of thought, is confined to a measurable extent of space. This is the phenomenon, or appearance. All our forms of thought are, it is said, molded on our experience of phenomena that are measurable, or capable of being definitely described; and the connotations of our words which express the relations of phenomena relate to phenomena that we measure, or see, and can definitely describe. Therefore, we can not think of a reality that is behind appearance; can not bring the consciousness of such a reality into any shape, nor bring into any shape its connection with appearance.
If mankind are never to think of that which is behind appearance—can never think of a reality that is behind what they see—because their forms of thought are molded on experiences of phenomena that they see, and because the connotations of their words express the relations of those phenomena and no others, a vast domain of thinking is necessarily closed to them. This is not the experience of our minds. Every day of our lives we go on in search of that which is beyond appearance, and we find it. Take again, for example, the phenomena of a measurable portion of space or time. What appears to us gives an idea of space and time. We measure as great a portion of either as our forms of expression admit of our describing by definite terms, but we are immediately conscious of another reality, an endless extension or duration, because we are conscious that we have not exhausted and can not exhaust, by our measurements and descriptions, the whole possible existence of space or time. This new reality behind appearance is just as truly thinkable, just as true a consciousness, as is the measurable portion of time or space; for it is time or space of which we are constantly thinking, whether it is an extent or duration which we can describe in words, or whether we can only say that it is extent or duration without beginning and without end. Our minds are so constituted that the existence which is manifested to us by observable phenomena leads us to go behind the appearance in search of another reality beyond that which is manifested by the phenomena that we see. All that is inscrutable about this other reality that lies behind appearance is that we can not understand how it came to be, any more than we can understand how the phenomenon which we see and can measure and describe in a definite form came to exist. We do not bring, and do not need to bring, this other reality into connection with appearance. We first have an idea of space and time from observable and measurable phenomena. The reality of extension without limit, and duration without end, follows of necessity, by a process of thought which we can not escape.
But now it becomes needful to answer a further objection. I have said that we are all the while thinking of space, whether it is a measurable and limited or an immeasurable and illimitable space. Mr. Spencer, anticipating this obvious statement, admits that the form of relation between the two ideas, although "almost blank," preserves a certain qualitative character; that is, it is of the quality of space of which we think, whether it is measurable or immeasurable, and therefore it remains "a vaguely identifiable relation." But when, in place of one of the terms of the relation qualitatively the same as the other, we substitute an existence that can not be defined, and is therefore both quantitatively and qualitatively unrepresentable, the relation, he asserts, lapses entirely; one of the terms becomes wholly "unknowable."
I will not again repeat that extension or magnitude having no known limits is a thinkable term, because the subject of thought is the quality of extension or magnitude; quantity not being essential to the idea of extension or magnitude. But I will pass to the idea of an existence which can not be defined. I suppose that by an existence is meant a being. If we undertake to think of a being whose quality we do not know to be the same as the quality of another being whom we do know, and the quantity of whose powers and faculties we can not measure, we propose, says Mr. Spencer, a term of impossible thought, because the law of thought can not be conformed to; the term can not be present to the mind, and no thinkable relation can be framed. Let this supposed difficulty be tested by a plain inquiry into that which we undertake to make the subject of thought when we think of a being who is said to be "unknowable."
"Agnosticism" is a doctrine which eludes a definite grasp. I have seen it defined by one of its most distinguished professors in this way: "Agnosticism is of the essence of science, whether ancient or modern. It simply means that a man shall not say he knows or believes that which he has no scientific grounds for professing to know or believe.... Agnosticism simply says that we know nothing of what may be beyond phenomena."[97] Mankind are apt to be rather practical in their habits of thinking: experience teaches them that there is a well-founded distinction between knowledge and belief, when it comes to be a question of asserting the one or the other.[98] They find, too, by experience that, in regard to what they speak of when they say that they know a thing, there is a distinction to be observed in respect to the means of knowledge. No one hesitates to say that he knows there was such a man as Napoleon Bonaparte, although he never saw him, and although our knowledge of him is now derived from hearsay. But when we speak of knowing that a certain living person was at a certain spot on a certain day, we become immediately aware that in order to justify the assertion we or some one ought to have seen the person at the time and place, especially if anything important depends upon the assertion. There are a great many things that we say we know without scientific or other rigorous proof, and there are a great many other things which we do not say that we know without the kind of proof which is required. All our actions in life proceed upon this distinction, and we could not live in this world with any comfort if we did not act upon the assumption that we know things of which we have no scientific proof.
A very clever jeu d'esprit went the rounds of the periodical press some time ago, in which a well-born and highly educated young agnostic was represented as losing his birthright, his fiancée, and all his prospects in life, because he demanded rigorous proof of everything that affected him. As he would not admit that he was the son of his own parents, without having better proof of it than their assertion, he was turned out-of-doors and disinherited. He would not accept the bloom on the cheek of his mistress as natural unless she gave him her word that she did not paint; and he would not admit that they loved each other without some better proof than their mutual feelings, about which they might be mistaken. The young lady indignantly dismissed him, but he consoled himself as a martyr to the truth of agnosticism. He became tutor to the son of a nobleman, whose belief in the boy's extraordinary talents, although justified by his progress in his studies, the tutor would not admit had the requisite proof. He propounded his denial of what the father had no proper grounds for maintaining, in an offensive way, and of course he lost his place. He retired to a sort of agnostic brotherhood, glorying in his adhesion to truth. Some of his companions remained long enough in the brotherhood to find out that they were making fools of themselves, and at the first opportunity for acting on the ordinary grounds of knowing a fact without rigorous demonstration of it they left him in solitude, went into the world, and achieved success.
"A man shall not say he knows or believes that which he has no scientific grounds for professing to know or believe." By "scientific grounds," I presume is meant, in the case of a fact or occurrence, proper proof of the fact or occurrence. This varies with the nature of the thing which one professes to know. We constantly act upon proofs which do not amount to demonstration, and there could be no practical enjoyment of our lives and no safety if we did not. If a government were to receive information that a foreign army was on the border of the country and about to invade it, and the information fell short of being the testimony of eye-witnesses, what would be thought of the rulers if they were to fold their hands and say that they did not know the fact because they had no "scientific grounds for professing to know it"? On the other hand, if in a court of justice the question to be determined were the presence of an individual at a certain place and at a certain time, the established rules of evidence require certain kinds of proof of the fact.
Belief, however, is a conviction of something which may or may not require what are called "scientific grounds" before we can be permitted to profess that we believe. It depends upon the thing which we profess to believe, and upon the grounds on which we rest the belief, whether we have or have not safe and sufficient means of belief. Belief in the law of gravitation as a force operating throughout the universe is arrived at as a deduction from scientific data. Belief in an existence beyond phenomena, in a being who is the producing agent of the phenomena, depends upon a great variety of grounds, some of which are scientific data and some of which are the elements of moral reasoning. We may not say that we "know" that God or any other supernatural being exists, but we may say that we "believe" in his existence. Here knowledge is one thing; belief is another. Knowledge of the existence of God, like knowledge of the existence of any other being, might come to us through the testimony of a competent witness commissioned and authorized to inform us. Belief in the existence of God may be founded on many and various grounds without the direct testimony of the competent witness; and these grounds may be perfectly satisfactory without being mathematical or scientific demonstration. It is a very remarkable fact that some of the most eminent of the school of agnosticism profess to have, and probably have, the most undoubting faith in the theory and actual occurrence of animal evolution, without any data, scientific or other, which can enable other men to arrive at the same conviction, whatever may be the character of the supposed proofs. They certainly have no grounds for professing to know that an evolution of species out of species has ever taken place; and the grounds of their belief in the fact, whether denominated "scientific" or called something else, do not satisfy the rules of belief on which mankind must act, in accordance with their mental and moral constitutions; and this belief does not rise any higher in the scale of moral probabilities than the belief in special creations, nor does it rise so high. But to return to Mr. Spencer.
If we did not act upon the process of thinking of another reality than that which appearance gives, act upon it fearlessly and by a mode of thinking to which we can safely trust ourselves, science would stand still, there would be no progress in physics, discoveries would cease, there would be no improvement in morals, the world would remain stationary. What did Columbus do, when, going behind the phenomena that made the earth appear to be a flat surface, he thought of it as a sphere? Did he break the law of thought? He formed an idea of a reality behind appearance, not by employing the phenomenal manifestations to help him to the new conception, but by going away from them in search of a reality that lay behind them, and which they seemed to contradict. This conception of a sphere as the reality of the earth's condition proved to be the truth. He did not bring it, and did not need to bring it, into connection with appearance. He did not use, and did not need to use, the relations of the visible phenomena to help him to attain his conception of a spherical form of the earth. He contradicted them all.
Did all the moral lawgivers who have reformed the world break the law of thought, when, going behind the phenomena of human conduct, with their relations pointing to one idea of right and wrong, they conceived the idea of a new and a better rule of life? When it was said, in place of the old law of an eye for an eye and a tooth for a tooth, "Love your enemies and pray for those who persecute you"—when for the old rule of revenge there was substituted forgiveness of injuries—something was inculcated that contradicted all the appearances of the social phenomena, and that lay beyond them. Did the consciousness of this new reality become "a formless consciousness of the inscrutable"? What is there about it that is inscrutable? There is nothing inscrutable about it, or in the consciousness of it, excepting the mode in which the being who promulgated it came to exist. The idea of forgiveness is clearly within the compass of human thought and of human endeavor.
When we are in the process of making a new physical discovery, or of forming a new rule of moral action, we work away from the materials which the phenomenal manifestations give us, to a new conception. We become conscious of a new reality behind appearance, and of an existence beyond the relations of the phenomena with which we have heretofore been familiar. It is to this striving after realities behind appearances—striving by an entirely true process of thinking—that the world owes its progress.
When the phenomenal manifestations of an intellectual and moral nature in man have given us the idea of an existence of an intellectual and moral being as a reality of which we become conscious, what is to prevent us from thinking of another intellectual and moral being as a reality, with faculties and powers immeasurably superior to ours? It is true that the phenomenal manifestations of man's intellectual and moral nature give us an idea of a being of very limited faculties and very imperfect moral qualities. But what is the "insoluble difficulty" in which we become involved, when we think of a being whose faculties are boundless, and whose moral nature is perfect? Does the "insoluble difficulty" consist in the impossibility of thinking of that which transcends all our powers of measurement? All that we have done, in the case of man, is to have a consciousness of a being whose phenomenal manifestations evince the existence of an intellectual and moral nature. He happens to be a being of very limited faculties and very imperfect moral characteristics. What prevents us from thinking, in the true sense of thinking, of another being, whose powers are without limit, and whose moral nature is perfect? Is it said that we can not bring into any shape the idea of unlimited power or of perfect goodness, or bring into any shape its connection with appearance, because all our ideas of power and goodness, all our forms of thought and expression, are molded on experiences of limited power and imperfect goodness? The truth is that we do not and need not strive to bring into connection with appearance the idea of any quality which we conceive of as unlimited. What we derive from the phenomenal manifestations of human power and goodness is a consciousness of the qualities of power and goodness. It is perfectly correct thinking to reason that these qualities, whose phenomenal manifestations, in the case of man, show that in him they exist only in a limited degree, may exist in another being in unlimited perfection and without degree. Our minds are so constituted that we reason from the finite to the infinite, by observing that one class of phenomena evince the existence of the finite and another class of phenomena evince the existence of the infinite.
When, therefore, we pass from the phenomenal manifestations of human power and goodness, we come into the presence of other phenomena which we know could not be and were not produced by such a limited and imperfect being as man, but which must yet have had an author, a maker, an originator, a creator. We thus contemplate and investigate facts which show that the phenomena were the products of a skill, wisdom, and power that transcend all measurement. Is it said that the phenomena of nature, stupendous and varied and minute and wonderful as they are, evince only that a certain degree of power and wisdom was exerted in their production, even if their production is attributed to a being competent to bring them about? And therefore that the idea of a being of unlimited faculties and perfect goodness is as far as ever from our reach by any true process of thought? This assumption begs something that should not be taken for granted. It assumes that the production of the phenomena of nature does not evince unlimited power and perfect goodness; did not call for the existence of boundless faculties and inexhaustible benevolence; involved only a degree of such qualities, although a vastly superior degree to that possessed by us. The correctness of this assumption depends upon the force of the evidence which nature affords of the character of the Deity. It is an assumption which has led to enormous errors—errors of conception and belief which impute to the Supreme Being only a superior degree of power and wisdom, greater than our own, but still limited and imperfect, liable to error, and acting in modes which distress us with contradictions and inconsistencies.
It may without rashness be asserted that the phenomena of the universe could not have been produced by a power and wisdom that were subject to any limitations. While all the researches of science, from the first beginnings of human observation to the present moment, show that in the production of the phenomena of nature there has been exerted a certain amount of power and wisdom, they also show that it is an amount which we can not measure; that there is, moreover, a power and wisdom that have not been exhausted; that the reserved force and skill and benevolence are without limit. For, in every successive new discovery that we make, in every new revelation of the power and goodness which our investigations bring forth, we continuously reach proofs of an endless capacity, an inexhaustible variety of methods and of products. So that, if we conceive of the whole human race, with all its accumulated knowledge, as ending at last in one individual possessed of all that has been learned on earth, and imagine him to be then translated to another state of existence, with all his faculties of observation and study preserved, and new fields of inquiry to be opened to him, his experience on earth would lead him to expect to find, and we must believe that in his new experience he will find, that the physical and the moral phenomena of the universe are an inexhaustible study; that search and discovery must go on forever; and that forever new revelations of power and goodness will be made to the perceptions whose training began in a very limited sphere. His experience in that limited sphere has taught him that there was no end to the discoveries which were here partially within his reach. His experience in the new sphere will be a continuation of his experience in the old one; for there is a law by which we judge of the future by the past. This law is one of the conditions of our intellectual existence; an inevitable habit of our minds; imposed upon us by an inexorable but familiar authority. Our experience in this life has taught us that, in the investigation of the phenomena of nature that are open to our observation here, we have never reached the end of possible discovery; that every fresh discovery has evinced that there are still new things to be learned, new manifestations of power to be revealed, new products and new methods to be seen. However long we may suppose the human race to exist on earth and its researches to be prosecuted here, we must suppose an endless accumulation of knowledge hereafter, because the law which compels us to judge of the future by the past obliges us to accept as the fruition of the future that which has been the fruition of the past.[99]
Is there in this any violation of the true law of thought? Does the relation between our past experience and the experience which we forecast for the future fade into a dim symbol of a relation? On the contrary, both are equally capable of mental representation; for we are mentally so constituted that the consciousness of what has happened to us in the past—the unending succession of new discoveries, the constant accumulation of knowledge, which we have experienced here—gives us the conception of the same endless progress hereafter, compels us to believe in it, and enables us to grasp it as a product of true thought.
Mr. Spencer has much to say of "the imbecility of human intelligence when brought to bear on the ultimate question." What is the ultimate question? The ultimate question with which science and philosophy are concerned is the existence of the Supreme Being. It is of the utmost consequence for us to understand wherein consists the imbecility of human intelligence when brought to bear upon this question of the existence of God. How does our imbecility manifest itself? What is the point beyond which thought can not go? We become conscious of the existence of the being called man, because, from the phenomena which we know that he produces by the exercise of his will and power, and which we know must have had an author and producer, we deduce an existence beyond the phenomena, an actor in their production. What more, or what that is different, do we do or undertake to do, when, from the phenomena of nature which we know that man did not produce, we think of another existence beyond the phenomena? In both cases, we study the phenomena by our senses and powers of observation; in both cases we reason that there is an actor who produces the phenomena; yet the existence of the actor who produces the phenomena is inscrutable in the case of the Deity in the same sense and for the same reason that it is inscrutable in the case of man. How the human mind came to exist, by what process it was made to exist, by what means it was created, what was the genesis of the human intellect, is just as inscrutable, no more and no less so, as the mode in which the Deity came to exist. In both cases the existence of a being is what we think of; and when we think of either being we think of that which is beyond phenomena but which we deduce from phenomena. In neither case do we "accept a formless consciousness of the inscrutable"; for what we accept is the consciousness of a being, and it is not a consciousness of the mode in which he came to exist. The latter consciousness is the inscrutable problem. The existence is what we think of, and we think of it by a perfectly true process of thought, deducing it from the simple truth that the phenomena must have had an actor in their production. We do not undertake to think of the process by which man was created, or of the mode in which that other existence came to be without beginning and without end.
I have thus discriminated between what we do and what we do not think of, when we think of an existence beyond phenomena, but which we deduce from phenomena. This is a most necessary discrimination; for, in thinking of the existence, we do not try to think how it came to be an existence. We think only of the existence; and we deduce it from our observation and study of phenomena, which teach us that they must have had an actor, an author, a producer, and that they did not produce or create themselves.
It remains for me to advert to Mr. Spencer's theory of the origin of the religious consciousness, or the origin of the idea of supernatural beings, and hence of one highest supernatural being. This is his ghost-theory. He has recently told us that in his "Descriptive Sociology"—a work commenced in 1867, and which preceded his "Principles of Sociology" (written in 1874)—he caused to be gathered adequate materials for generalization, consisting of a great number of excerpts from the writings of travelers and historians who have given accounts of the religious beliefs of the uncivilized races. He numbers 697 of these extracts which refer to the ghost-theory, and only 87 which refer to fetichism. This great ratio of eight to one he considers overwhelming proof that the ghost-theory, as opposed to fetichism, is sustained by the beliefs of a vast majority of the uncivilized races. What if it is? What is the ghost-theory, and what is fetichism, as the chief source and origin of religion? Mr. Spencer, in his recent article, explains fetichism as most persons understand it, namely, the worship of inanimate objects, or belief in their supernatural powers. The ghost-theory, which his 697 extracts illustrate, is "the belief in a wandering double, which goes away during sleep, or fainting, and deserts the body for a longer period at death; a double which can enter and possess other persons, causing disease, epilepsy, insanity, etc., which gives rise to ideas of spirits, demons, etc., and which, originates propitiation and worship of ghosts."[100] Further on, he reiterates his ghost-theory as the origin of religious beliefs, and explains it thus:
Setting out with the statement that "unlike the ordinary consciousness, the religious consciousness is concerned with that which lies beyond the sphere of sense," I went on to show that the rise of this consciousness begins among primitive men with the belief in a double belonging to each individual, which, capable of wandering away from him during life, becomes his ghost or spirit after death; and that from this idea of a being eventually distinguished as supernatural, there develop, in course of time, the ideas of supernatural beings of all orders up to the highest. Mr. Harrison has alleged that the primitive religion is not belief in and propitiation of the ghost, but is worship of "physical objects treated frankly as physical objects" (p. 498). That he has disproved the one view and proved the other, no one will, I think, assert. Contrariwise, he has given occasion for me to cite weighty authorities against him.
Next it was contended that in the assemblage of supernatural beings thus originating in each tribe, some, derived from chiefs, were superior to others; and that, as the compounding and recompounding of tribes gave origin to societies having social grades and rulers of different orders, there resulted that conception of a hierarchy of ghosts or gods which polytheism shows us. Further it was argued that while, with the growth of civilization and knowledge, the minor supernatural agents became merged in the major supernatural agent, this single great supernatural agent, gradually losing the anthropomorphic attributes at first ascribed, has come in our days to retain but few of them; and, eventually losing these, will then merge into a consciousness of an Omnipresent Power to which no attributes can be ascribed. This proposition has not been contested.
Without entering into any consideration of what Mr. Harrison has disproved or proved, as between fetichism and the ghost-theory, I will now ask why the beliefs of the uncivilized races, or of the primitive men, should be regarded as important evidence of the origin of beliefs among civilized and cultivated men? Is modern philosophy, in accounting for or justifying the belief in a Supreme Being which is held to-day by most of the cultivated and educated part of mankind, to assign its origin to the primitive and uncivilized men? Is the whole idea of a supernatural being to be regarded as traditionally handed down from our barbarian ancestors? Is there no other source from which we can derive that idea? Are we none of us capable of finding for ourselves rational grounds of belief in a supernatural agent, deducing his existence from a study of nature? Or must we trace this belief back through the ages until we arrive at an origin which we shall of course despise? What has philosophy to do now with "the primitive religion"? Is there nothing that science and reason and disciplined methods of thought and sound deduction can teach us? Are we to throw away all the proofs which nature spreads before us, and for the investigation of which we have accumulated so many facilities, and turn to the beliefs of uncivilized men? Are the conceptions of supernatural beings, to which a barbarian attained, to be taken as the origin of the conception of a personal God to which an educated philosopher can now attain? And because of the inadequate and childish superstitions of the past, and of their growth into a belief of one supreme supernatural agent—whatever that idea of him may have been—is the consciousness which we have of a personal God to be hereafter merged into a consciousness of an Omnipresent Power to which no attributes can be ascribed?
It should seem that the mode in which philosophy, after it came to be cultivated by civilized thinkers and observers, freed itself first from fetichism and the ghost-theory and all the beliefs of polytheism, next from physical agents as the causes of all phenomena, and finally attained an independent conception of a First Cause as a supreme personal intelligence and power, is worthy of some consideration.
In the first chapter of this work, borrowing from the English scholar and critic, Mr. Grote, I have given a condensed account of some of the systems of Greek philosophy which began in the first half of the sixth century before Christ, and extended down to Plato, whose life was embraced in 427-347 of the ante-Christian era. About 150 B. C., the Greek philosophy, and especially the speculations of Plato, encountered at Alexandria the monotheism of the Hellenizing Jews.[101] This history of Greek philosophy, as developed by Mr. Grote, shows that the struggle against polytheistic agencies, as the causes of natural phenomena, began with efforts to find purely physical agencies; that this struggle, in spite of the surrounding beliefs in a multitude of supernatural beings of different orders, was long continued, and gave rise to a most remarkable variety of scientific explanations: that it passed through an extraordinary number of physical theories, until at length in Plato there was developed the idea of a distinct personal constructive actor, the Demiurgus, a being to whom, whether intended by Plato as a philosophical myth, or as an entity in which he had something of faith or conviction, he assigned the formation of his Kosmos. With characteristic acumen, the English commentator points out Plato's skill in eluding the possible charge of infidelity to the established religion of Athens, while he at the same time propounded the existence of a personal First Cause that was in a striking degree inconsistent with the popular faith. The whole course of this history of Greek speculation evinces that from an early period the Greek philosophers were utter skeptics in regard to the popular religion and the poetic traditions; that they not only did not derive anything from the primitive religion, from fetichism, from the ghost-beliefs of their barbarian ancestors—if their ancestors had such beliefs—or from their heroic ages, or from the multitudinous gods of the popular theology and the popular worship, or from the old poetical imagery, but that they strove to get away from all these sources, and to construct theories of the universe that would explain the ultimate cause or causes in a very different manner. The earliest Greek speculators got no further in their theories than the construction of systems of physical agencies, or agencies that stood to them in the quality of physical actors. Plato, on the other hand, resorted to the conception of a supreme personal actor.
Mr. Grote has further mentioned a very striking fact, which is, that before the Christian era, the Demiurgus of Plato was received by the Hellenizing Jews at Alexandria as a conception kindred to the God of Moses. His statement, in substance the same as that previously made by a Continental critic, Gfrörer, is so interesting and important that I quote his words: "But though the idea of a pre-kosmic Demiurgus found little favor among the Grecian schools of philosophy before the Christian era, it was greatly welcomed among the Hellenizing Jews at Alexandria, from Aristobulus (about B. C. 150) down to Philo. It formed the suitable point of conjunction between Hellenic and Judaic speculation. The marked distinction drawn by Plato between the Demiurgus, and the constructed or generated Kosmos, with its in-dwelling gods, provided a suitable place for the Supreme God of the Jews, degrading the pagan gods by comparison. The 'Timæus' was compared with the book of Genesis, from which it was even affirmed that Plato had copied. He received the denomination of the Atticising Moses—Moses writing in Attic Greek. It was thus that the Platonic 'Timæus' became the medium of transition from the polytheistic theology, which served as philosophy among the early ages of Greece, to the omnipotent monotheism to which philosophy became subordinated after the Christian era."[102]
Perhaps there is no more remarkable fact than this in the whole history of philosophical speculation. Possibly Mr. Spencer would say that it adds another proof to his ghost-theory. But the important fact is that Plato's Demiurgus partakes in no degree of the ghost idea, and, instead of being a modification of that idea, is an original and perfectly independent conception. The Demiurgus of Plato is not a chief spirit evolved in imagination out of a hierarchy of spirits. He is himself the originator and fashioner of the gods, of whom he makes use as ministers in the formation of the bodies of the primitive men, after he has himself formed the souls which are to inhabit them for a season.
It appears, by Mr. Grote's citations from Gfrörer, that the latter had previously noted what Aristobulus maintained one hundred and fifty years earlier than Philo, namely, that "not only the oldest Grecian poets, Homer, Hesiod, Orpheus, etc., but also the most celebrated thinkers, especially Plato, had acquired all their wisdom from a very old translation of the Pentateuch." Neither of these modern critics appears to have accepted the assertion of Aristobulus, and its intrinsic improbability is very great. Certainly the internal evidence of the "Timæus" negatives the assumption that Plato had seen the Pentateuch, for his Demiurgus is not the God of Moses, although it was very natural for the Alexandrian Jews to think they recognized a resemblance. Mr. Grote, moreover, seems to put this matter beyond doubt, for he says that the Platonic "Timæus" became the medium of transition from the polytheism of early Greece to the monotheism of the Christian era. This implies very clearly that Mr. Grote did not consider the Demiurgus of Plato to be either derived from the polytheism of the early Grecian ages, on the one hand, or from the Mosaic Jehovah, on the other hand, but that he considered it a conception which stood between them. The point of resemblance is in the idea of a divine and supreme personal actor in the production of phenomena.
It does not seem, therefore, that a philosopher at the present day is confined to the source of the primitive religion, be that source what it may. The primitive religion, whether its origin was fetichism or a belief in ghosts, has imposed no shackles upon our minds. The beliefs of the primitive men may have originated as Mr. Spencer supposes, but the question for us—revelation being laid aside—is just what it was for Plato, the difference being that our means of investigation are superior to his. The grounds of our belief in a personal God are not the same as those on which the uncivilized races formed first the idea of a wandering double emanating from the human body, then conceived of spirits or ghosts, next of different orders of spirits or ghosts, and finally of a chief and supreme spirit. Our materials for sound deduction are not the same as those of the primitive races of mankind, or of the uncivilized tribes of the present day. I have before remarked that the intellectual effort of a savage in striving for the idea of a deity is the same kind of effort as that of the civilized and educated man; but that the difference between them is in the growth and activity of the reasoning power, and in the materials on which it is exercised. While our barbarian predecessors lived in an age of ignorance, we live in an age of knowledge. We are surrounded by extraordinary discoveries, and are possessed of the means of still further research. They had almost no means for investigating physical phenomena. We are, or ought to be, disciplined reasoners. They, on the contrary, while able to reason correctly on a very few subjects, could not reason correctly on all subjects. We are, or ought to be, capable of subjecting the materials which the phenomena of nature spread before us, to sound processes of thought and to logical deductions. We are, or ought to be, capable of discriminating between that which is really inscrutable and that which is not so. We are, or ought to be, able to know when we are within the bounds of possible thought, and when we transcend them. We are, or ought to be, able to see that the existence of phenomena necessarily implies a causing power; that when the phenomena are such as we know that man produces, the idea of an intelligent personal actor is both a legitimate deduction and a perfectly appreciable subject of thought. Are we not entitled to apply the same reasoning to the phenomena of nature which we know that man did not produce? And when we so reason, do we borrow anything whatever from the primitive idea of ghosts or spirits, whether they are supposed to have first emanated from human bodies, or to reside in inanimate objects?
There are two distinct values to be assigned to the researches of science. One of them consists in the practical improvement of the material condition of society; the lessening of physical evil, the increase of physical good; the advancement of our power over matter. In an age intensely devoted to this materialistic improvement, there will be a great accumulation of physical knowledge. At the same time there are accumulating in the same ratio new materials for philosophical speculation concerning the causes of the phenomena that are investigated. The specialists who carry on the investigations may not always be the best reasoners in the application of the new materials to the purpose of philosophical inquiry into the producing causes of the phenomena. But the other distinct value of their investigations consists in the accumulation of materials from which the philosopher can deduce the existence of an actor in the production of the phenomena. When, from these materials, constantly accumulating and constantly to be used in a uniform process of reasoning to which the human mind is both able and obliged to resort, the philosopher deduces the conception of a supreme, personal, intelligent being, he assigns to that being just those attributes which the phenomena of nature compel him to believe in, because if the attributes did not exist the phenomena of nature could not have become what they are. There can be no reason to suppose that as the materials increase, as the researches of science, for whatever purpose carried on, lead to greater and still greater accumulations of knowledge, the law of thought by which we deduce the idea of an actor in the production of phenomena will change, or that the logical necessity for conceiving, or the intellectual capacity to conceive of, the attributes of that actor will either diminish or fade away. An Omnipotent Power without attributes, or one to which no attributes can be assigned, is not likely to be the end of all philosophical speculation about the ultimate cause. Power without attributes, power without a determining will, power without guidance, or purposes, or objects, is not a conception to which a well-trained intellect is now likely to attain; and the greater the accumulation of physical knowledge becomes, the greater will be the necessity to such an intellect for recognizing attributes, and for assigning them to the power which is manifested by the phenomena.
According to Mr. Spencer, the process by which mankind are ultimately to lose the consciousness of a personal Deity is the following: Anthropomorphic attributes were at first ascribed to the single great supernatural agent of whom the primitive men conceived. But in our days, the idea of such a supreme supernatural agent has come to retain but a few of these attributes. These few will eventually be lost, and there will be nothing left but a consciousness of an Omnipotent Power to which no attributes can be ascribed. The probability of this result depends upon the necessity for ascribing what are called anthropomorphic attributes to the Supreme Being; or, in other words, it depends upon the inquiry whether, in order to ascribe to the Supreme Being any attributes at all, we are necessarily confined to those which are anthropomorphic.
"Anthropomorphism," a term compounded from the Greek ἄνθρωπος, man, and μορφή, form, has come to signify the representation of the Deity under a human form, or with human attributes and affections. It is therefore important to know what we in fact do, when reasoning on the phenomena of nature, we reach the conclusion that they must have had an author or producer, and then ascribe to him certain attributes. The fact that the ancient religious beliefs ascribed to the Supreme Being grossly anthropomorphic attributes, is unimportant. So is the fact that the anthropomorphic attributes have been slowly diminishing in the conceptions of the reasoning and cultivated part of mankind. The really important question is whether there can be no conception of a Supreme Being without ascribing to him attributes which liken him to man; or whether, when the anthropomorphic attributes are lost, the idea of a personal God will be lost.
The essential character of any anthropomorphic or human attribute—power for example, or wisdom, or goodness—is that it is limited, imperfect, and liable to error. But when we conceive of these qualities as existing in absolute perfection and boundless capacity, while we retain the idea that they are personal qualities, we in fact divest them of their anthropomorphic or human character. It is a contradiction in terms to say that an imperfect human capacity is the same attribute as a divine and unlimited capacity. The difficulty with the ancient religious beliefs, the whole error of anthropomorphism, was that the conceptions stopped short of the idea of unlimited power, wisdom, and benevolence. The attributes ascribed to the Deity likened him to man in form, character, powers, dispositions, passions. He was an exaggerated human being, with vastly more power, more skill, more wisdom, but still with the same kind of power, skill, and wisdom, actuated by like motives and governed by like passions. Now the truth is, that the difference between a limited and imperfect attribute of character and one that is boundless—power, for example—is more than a difference of degree. It is a difference in kind; for while in both cases we conceive of a personal capacity to act and a will to guide the act, in the one case we are thinking of that which is inferior, limited, and feeble, and in the other case we are thinking of that which knows no limitations and is absolutely inexhaustible. It is not true, therefore, that there can be no conception of a Supreme Being without ascribing to him human attributes. When we reason from phenomena to the conclusion that they must have had an author—when we reach the conviction that phenomena must have had a cause, that there must have been an actor, a process, and a product—we have to deal with two classes of phenomena. One is the class in which we know, from the observations of our senses and our experience, that the author and actor was man. It becomes verified to us with irresistible certainty that the phenomena of human society were produced by an actor, and that that actor was man; a personal agent with a limited and imperfect power. When we turn to the phenomena of nature which we know that man did not produce, we are led by the same irresistible logical sequence of thought to the conviction that these phenomena must have been caused to exist, for human reason revolts at the idea that the phenomena which exist were not caused to exist. We come immediately to perceive that the phenomena of nature are of such a character that the power which has produced them must not only have been superhuman, but it must have been absolutely boundless. At the moment we depart from the investigation of phenomena which belong in the department of human efforts, and come to the phenomena which belong in the department of nature alone, while the necessity for a personal actor continues, the character and capacities of the actor become entirely changed. We see that the phenomena of nature required for their production power without limitation, skill incapable of error, benevolence that was inexhaustible. We thus pass entirely away from anthropomorphic attributes, to the conception of attributes that are not human. We may go on to divest the idea of a Supreme Being of all the attributes that can appropriately be classed as anthropomorphic, and there will still remain the conception of a Supreme Being to whom we not only may but must ascribe attributes that are forced upon our convictions, not because some of them belong in an inferior degree to man, but because all of them are of such a character that if they did not exist in boundless perfection the phenomena of nature could not have existed.
Among the origins which have been assigned to religious beliefs, there is one remarkable hypothesis which may be contrasted with the ghost-theory, and which, so far as the beliefs of cultivated men at the present day are concerned, is about as important as the origin of the belief in ghosts, or as fetichism. It seems that some of the Greek philosophers and historians, entirely regardless of the ghost-theory as the origin of beliefs in supernatural beings, considered that they were fictions invented by the first lawgivers, and promulgated by them for useful purposes. Belief in the gods was thus imposed by the authority of those who organized society and dictated what men were to believe in order to exercise a useful restraint. Plato himself regarded this as the origin of what the communities around him believed respecting the attributes and acts of the gods; the matters believed being fictions prescribed by the lawgivers. In his "Republic," in which he sketches the entire political, social, ethical, and religious constitution of an ideal city, assuming it to be planned and put in operation by an absolute and unlimited authority, he laid it down as essential for the lawgiver to determine what the fictions were to be in which his own community were to be required to believe. Some fictions there must be; for in the community there would be originally nothing but a vague emotional tendency to belief in supernatural beings, and this tendency must be availed of by some positive mythical inventions which it was for the lawgiver to produce and the citizens to accept. Such fictions were the accredited stories about the gods and heroes, which formed the religious beliefs among Plato's contemporaries, and were everywhere embodied in the works of poets, painters, and sculptors, and in the religious ceremonies. But the ancient fictions were, in Plato's opinion, bad, inasmuch as they gave wrong ethical ideas of the characters of the gods. They did not rest upon traditionary evidence, or divine inspiration, being merely pious frauds, constructed by authority and for an orthodox purpose. But they did not fulfill the purpose as well as they should have done. Accordingly, Plato directs in his "Republic" the coinage of a new body of legends, for which he claims no character of veracity, but which will be more in harmony with what he conceives to be the true characters of the gods, and will produce a more salutary ethical effect upon those who are to be the efficient rulers of the commonwealth after it is founded. As the founder of his ideal city, he claims and exercises an exclusive monopoly of coining and circulating such fictions, and they are to be absolutely accepted by those who are to constitute its rulers, and who are to promulgate and teach them to the community, as the physician administers wholesome remedies. To prevent the circulation of dissenting narratives, he establishes a peremptory censorship. There is thus no question of absolute truth or absolute falsehood. That is true which is stamped at the mint of the lawgiver, and that is false which he interdicts.[103]
Nowhere has orthodoxy been rested more distinctly upon the basis of absolute human authority—authority acting upon the highest motives of the public good, for the most salutary purposes, but without claiming anything in the nature of divine inspiration, or even pretending to any other truth than conformity to preconceived ideas of the characters of the gods. As evidence of what Plato regarded as the origin of the religious beliefs which were held by his contemporaries, his "Republic" is an important testimony; for he assigns almost nothing to mankind in general, but an emotional tendency to believe in invisible quasi-human agents, of whom they had no definite conceptions, and at the same time they were entirely ignorant of recorded history, past and present. They needed distinct legendary fictions and invented narratives; these were furnished to them by those who could coin them, and were accepted upon the authority of those who promulgated them. Those who first embodied the fictions as narratives were the oldest poets; in progress of time the authority which dictated belief in them came to be the state. Plato rejected the fictions of the state, and in his "Republic" proposed to substitute fictions of his own. The testimony of Plato, therefore, in respect to the origin of religious beliefs in the early ages of Greece is decidedly against the ghost-theory, whatever support may be found for that theory in the beliefs of the uncivilized races of our own day, or in the beliefs of other nations of antiquity. But neither the ghost-theory, as the origin of beliefs in supernatural beings, nor the origin of such beliefs in the will of the lawgiver, which Plato clearly held in his "Republic" to be the foundation of orthodoxy, is any test or measure of what philosophy may attain to as a rational conception at the present day.[104]
I propose, therefore, to imagine a man of mature years, without any religious prepossessions whatever, a perfectly independent thinker, furnished with the knowledge that is now within the easy reach of human acquisition, capable of correct reasoning, and with no bias to any kind of belief. It is only necessary to personify in one individual the intellectual capacity of the cultivated and educated part of mankind, but without the religious ideas instilled into them by education, in order to have a valuable witness to the mental processes and results which can be followed and attained by a right employment of our faculties. And, the better to exhibit the processes and results, I propose to let this imaginary person discuss in the form of dialogue, in which another imaginary interlocutor shall be a modern disciple of the evolution school, whatever topics would be likely to come into debate between such persons.
[CHAPTER VIII.]
The existence, attributes, and methods of God deducible from the phenomena of Nature—Origin of the solar system.
In all that has been said in the preceding chapters respecting the two hypotheses of special creation and evolution, the existence and attributes of the Supreme Being have been assumed. The question of the existence and attributes of God has been reserved for discussion as an independent inquiry; and this inquiry it is now proposed to make, without any reference to the teachings of revealed religion, or to the traditionary beliefs of mankind. The simple idea of God, which I suppose to be capable of being reached as a philosophical deduction from the phenomena of the universe, embraces the conception of a Supreme Being existing from and through all eternity, and possessed of the attributes of infinite power and goodness, boundless, that is to say in faculties, incapable of error, and of supreme beneficence. While this idea of God corresponds with that which has been held from an early period under more or less of the influence exerted by teachings which have been accepted as inspired, or as authorized by the Deity himself, the question here to be considered is whether the same idea of God is a rationally philosophical deduction from the phenomena of the universe without the aid of revelation.
In order to conduct this inquiry so as to exclude all influence of traditionary beliefs derived from sources believed to have been inspired, or from any authority whatever, let us suppose a man to have been born into this world in the full maturity of average human faculties, as they are found in well-disciplined intellects of the present age, but without any inculcated ideas on religious subjects. In the place of education commencing in infancy and carried on to the years of maturity, in the course of which more or less of dogmatic theology would have become incorporated almost with the texture of the mind, let us suppose that the mind of our inquirer is at first a total blank in respect to a belief in or conception of such a being as God, but that his intellectual powers are so well developed that he can reason soundly upon whatever comes within the reach of his observation or study. Let us further imagine him to be so situated that he can command at will the knowledge that science, as it now exists, could furnish to him, and that he is able to judge impartially any theories with which he meets. Such a person would be likely to deal rationally and independently with any question that might arise in the course of his investigations; and the fundamental question that would be likely to present itself to his mind would be, How came this universe and its countless phenomena to exist?
Stimulated by an eager curiosity, but careful to make his investigations with entire coolness of reasoning, let us suppose that our inquirer first turns his attention to the phenomena of the solar system, and to what astronomy can teach him in regard to its construction. He finds it to consist of—
1. The sun, a great central body giving forth light and heat.
2. A group of four interior planets: Mercury, Venus, the Earth, and Mars.
3. A group of small planets, called asteroids, revolving beyond the orbit of Mars, and numbering, according to the latest discoveries, about two hundred and twenty.
4. A group of four planets beyond the asteroids: Jupiter, Saturn, Uranus, and Neptune.
5. The satellites of the planets, of which there are twenty now known; all but three of them belonging to the outer planets.
6. An intermediate number of bodies called comets and meteors, which revolve in very eccentric orbits.
This system of bodies, constituting a mechanism by itself, apart from what are called the fixed stars, is the first object in nature to which our inquirer directs his studies. Inasmuch as the comets and meteors move in very eccentric orbits, and are supposed to come into our system from the illimitable spaces beyond it, although in the case of the comets, or some of them, mathematical calculations enable astronomers to predict their return when they have passed out of the solar system, and inasmuch as the sun and the superior planets may be contemplated as a grand piece of mechanism, and as the greatest mechanical object in nature of whose construction and movements we have some accurate knowledge, we will suppose that our inquirer confines his attention to this part of the solar system, without adverting to the action of the bodies which are not always, as these are, within the range of the telescope.
One of the first things that would strike him would be the enormous range in the sizes, distances, and relative weights of these different bodies. He would learn, for example, that Neptune is eighty times as far from the sun as Mercury, and that Jupiter is several thousand times as heavy; and he would observe that these differences in magnitude, distance from the sun, and weight of each mass, are carried through a range of proportions stupendously great. If he followed the best lights of modern astronomy, he would learn that what is known, or accepted as known, in regard to the operation of any law among these bodies, is that they are bound together by the law of universal gravitation as a force to which all matter would be subjected when it should come to exist, in whatever forms it might be distributed; secondly, that when the bodies now composing the solar system should come into existence, the system would not owe its proportions to the operation of the law of gravitation, but would be the result of a plan so shaped as to admit of its being governed by the law of gravitation after the system had been made, in such a manner as to produce regularity and certainty of movement and to prevent dislocation and disturbance. What the great modern telescopes have enabled astronomers to discover tends very strongly to show that the plan of the solar system, in respect to the relative distances, magnitudes, and revolutions of the different bodies around the sun, and their relations to that central body and to each other, are not the result of any antecedent law which gradually evolved this particular plan, but that the plan itself was primarily designed and executed as one on which the law of gravitation could operate uniformly, and so as to prevent any disturbance in the relations of the different bodies to each other.[105]
An illustration will help to make the meaning of this apparent. Let us suppose a human artificer to project the formation of a complex mechanism, in which different solid bodies would be made to revolve around a central body; and let us imagine him to be situated outside of the earth's attraction, so that its attraction would not disturb him. He would then have to consider the law of gravitation only in reference to its operation among the different bodies of his machine; and he would adjust their relative distances, weights, and orbits of revolution around the central body, so that the law of gravitation, instead of producing dislocation and disturbance, would bind the whole together in a fixed system of movement, by counteracting the centrifugal tendency of a revolving body to depart from its intended orbit, and at the same time relying on the effect of the two forces in preventing the revolving bodies from falling into the center or from rushing off into the endless realms of space.
This is what may well be supposed to have taken place in the formation of the solar system, for it is consistent with the law which must have preceded the existence of that system. We can not suppose that the law of gravitation was itself a mere result of the relative distances, magnitudes, and orbits of the different bodies. This supposition would make gravitation not a law, but a phenomenon. We do indeed arrive at the existence of the law of gravitation by observing the actions of the bodies which compose the solar system; in other words, we discover the law that holds them together, by observing their actions. But we should entirely reverse the proper process of reasoning, if we were to conclude that the law of gravitation is a phenomenon resulting from an arrangement of certain bodies according to a certain plan. The discoveries of astronomy, on the contrary, should lead us to regard gravitation as a universal law, which existed before the existence of the bodies which have been subjected to it. This is the only way in which our inquirer could reason in regard to the formation of the solar system, whether he supposed its plan to have been a special creation, or to have been evolved out of a nebulous vapor by the operation of the laws of motion or any other laws. Reasoning upon the hypothesis that the law of gravitation existed before there were any bodies for it to operate upon, or, in other words, that it had become in some way an ordained or established principle by which all bodies would be governed, he would have the means of understanding the adaptation of the solar system to be operated upon by the law which he had discovered.
He would next ask himself, How came this law of gravitation to exist? That it must have had an origin, must have proceeded from some lawgiver competent to make and enforce it, would be a conclusion to which he would be irresistibly led, for the very idea of a law implies that it is a command proceeding from an authority and power capable of ordaining and executing it. When it is said that a law is a rule of action ordained by a supreme power, which is perhaps the most familiar as it is the most exact definition, the idea of a command and of a power to enforce it is necessarily implied. This is just as true of a physical as it is of a moral law; of a law that is to govern matter as of a law that is to govern moral and accountable beings. Both proceed from a supreme authority and power, and both are commands. There is, however, one distinction between a moral law and a law of Nature, which relates to the mode in which we arrive at a knowledge of the law; a distinction which our inquirer would learn in the course of his investigations. We infer the existence of a law of Nature, or a law designed to operate upon matter, from the regularity and uniformity of certain physical phenomena. As the phenomena occur always in the same way we infer it to be an ordinance of Nature that they shall occur in that way. But the moral phenomena exhibited by the actions of men have not this regularity and uniformity. They are sometimes in accordance with and sometimes grossly variant from any supposed rule of moral action. We can not, therefore, deduce a moral law from our observation of the actions of the beings whom it was designed to govern, but we must discover it from the rules of right reason and from such information as has been given to us by whatever revelation may have come to us from another source than our own minds. But this distinction between the modes of reaching a knowledge of physical and moral laws does not apply to the authority from which they have proceeded. Both of them being commands, or fixed rules of action, both must have had an enacting authority. We learn the one by observing the phenomena of Nature. We learn the other from reason and revelation.
To return now to the examination of the solar system, which our inquirer is supposed to be prosecuting. The study, which astronomy and its implements will have enabled him to make, has taught him the existence of the law of gravitation, and has led him to the conclusion that it must have had an enacting authority. Following out the operation of this law, through the stupendous spaces of the solar system, he would begin to form conclusions respecting the attributes of its author. He would see that the power must have been superhuman; in other words, that it must have immeasurably transcended anything that can be imagined of power wielded by a being of less than infinite capacities; for, although the space occupied by the solar system, from the central sun out to the orbit of the planet Neptune, is a measurable distance, the conception of the law of gravitation, and its execution, through such an enormous space and among such a complex system of bodies, evince a faculty in the lawgiver that must have been boundless in power and skill. The force of gravitation is found to exactly balance the centrifugal tendency of the bodies revolving around the sun, so that, when once set in motion around that center, they remain in their respective orbits and never fall into the sun or into each other. Our learner would thus see the nature of the adjustment required to produce such a result; and, even if he endeavored to follow out this balancing of forces no farther than to the extreme boundary of the solar system, he would see that the being, who could conceive and execute such a design on such a scale, must have had supreme power and boundless intelligence. So that, by the study of the solar system, as its arrangements and movements are disclosed by astronomy, our inquirer would be naturally led to the conception of a lawgiver and artificer of infinite power and wisdom, ordaining the law of gravitation to operate against the centrifugal force, which would otherwise conduct out of its orbit a body revolving around a center, and then adjusting the relative distances, weights, and revolutions of the different bodies, so as to subject them to the operation of the great law that is to preserve them in fixed relations to each other.
If, next, our inquirer should go farther in his investigations of the solar system, and endeavor to satisfy himself concerning the mode in which the different bodies of this system came into existence in their respective positions, the history of astronomy would teach him that there has been a theory on this subject which fails to account for the existence of this system of bodies without the hypothesis of some special creation. This theory is what is called the nebular hypothesis. It supposes that the solar system was evolved out of a mass of fiery vapor, which filled the stellar spaces, and which became the bodies now observable by the telescope, and that they were finally swung into their respective places by the operation of the fixed laws of motion. But all that astronomers now undertake to say is that this hypothesis is a probably true account of the origin of the solar system, and not that it is an established scientific fact, or a fact supported by such proofs as those which show the existence of the laws of motion. The history of the nebular hypothesis, from the time of its first suggestion to the present day, shows that there are no satisfactory means of accounting for the method in which the supposed mass of fiery vapor became separated, consolidated, and formed into different bodies, and those bodies became ranged and located in their respective positions. The hypothesis that these results were all produced by fixed laws working upon a mass of fiery vapor, is one that has been reasoned out in very different ways; and this diversity of views is such that astronomers of the higher order do not undertake to say that opinions may not reasonably differ in regard to the principal question, namely, the question between the nebular hypothesis and the hypothesis of a special act or acts of creation.
Inasmuch, therefore, as scientific astronomy would present to our inquirer nothing but the nebular hypothesis to account for the production of the bodies of the solar system as they now exist, and as there are admitted difficulties in this hypothesis which may not be insurmountable but which have not been as yet by any means overcome, it can not be said that philosophers are warranted in assuming that all the phenomena of the solar system are to be explained by this theory. The hypothesis that the phenomena, or some part of them, have been produced by a cause operating in a different way, that is, by an act or acts of intentional and direct or special creation, is not excluded by the discoveries of the astronomer. Those discoveries lie in the domain of astronomy, and they do not exclude the hypothesis of a special creation of the solar system upon the plan on which we find it arranged. The latter hypothesis lies in the domain of philosophy. It is to be judged by the inquiry whether it is a rational explanation of phenomena, which astronomy does not show as an established scientific fact, or by proofs that ought to be deemed satisfactory, to have been produced by the method suggested by the nebular hypothesis.
The philosophic reasoning, which would conduct our inquirer to his conclusions, would begin for him with the existence of an omnipotent being, by whom the laws of matter and motion were established. This conception and belief he has attained from having discovered those laws, which must have had an author. He would soon hear the scientist speak of "natural" and "supernatural" methods, and he would understand that by the former is meant the operation of certain fixed laws, and, by the latter, a mode of action in a different way. But he would also and easily understand that the power which could establish the laws of matter and motion, the operation of which the scientist calls the natural method, could equally act in another way, which the scientist calls the supernatural, but which, in the eye of philosophy, is just as competent to the Infinite Power as the method called natural. To state it in different words, but with the same meaning, that which the scientist calls the supernatural is to the philosopher just as conceivable and just as consistent with the idea of a supreme being as the order of what we call Nature; for Nature is the phenomena that are open to our observation, and from which we deduce the probable method by which they have been brought about. It will never do to say that they could not have been produced by a cause operating differently from a system of fixed laws so long as we reason from the hypothesis of the existence and attributes of a Supreme Being. If we reason without that hypothesis, we may persuade ourselves of anything or of nothing.
This idea of a Supreme Being, possessed of the attributes of infinite power and wisdom, is one that our inquirer would have reached as a rational deduction from the operation of a law (gravitation) which must have had an author; from the structure of a mechanism so designed as to be governed successfully by that law, and from the execution of the law through such enormous spaces that nothing short of infinite power and wisdom could have produced the result.
At this stage of his investigations, our inquirer encounters a modern scientist. I shall take the liberty of coining convenient names for these two interlocutors: calling the one Sophereus, as representing the spirit of unprejudiced research in the formation of beliefs without the influence of previous teaching; and the other Kosmicos, as a representative of the dogmatic school of evolution and agnosticism.
Sophereus has imparted to his scientific friend the conclusions which he has thus far reached, concerning the existence and attributes of a supreme lawgiver and artificer, as deduced from the phenomena of the solar system. The discussion between them then proceeds as follows:
Kosmicos. I do not wish to convince you at present of my own views on this subject, but I put before you a difficulty which you ought to solve, if you can, to your own satisfaction, before you proceed farther. You have learned of the law of gravitation; and you have imagined a being who has established this and other laws by which matter is to be governed. To this being you have imputed certain personal attributes, which you call infinite power and boundless wisdom. Observe now that the laws to which you assign this origin are of perpetual duration; they have operated without change from the remotest period of their existence just as they operate now, and we have no reason to doubt that they will continue to operate in the same way through the indefinite future. They constitute the order of Nature. Now, you suppose a Supreme Being, who has established these invariable laws, but has not left them anything to do; has not left to them the production of the solar system, but has specially interposed, and in a supernatural mode of action has constructed the machine which has the sun for its center and the surrounding bodies which revolve about it. How can you suppose that the same being has acted in different ways? How can you suppose that the being who you imagine established the general laws of Nature and gave to them a fixed operation throughout the universe, so that they never would be suspended or interrupted, has gone aside from them, and made occasional constructions by special interpositions of his power? Is it not a contradiction to suppose that an Almighty Being, who must have acted by uniform methods without reference to occasions, has acted on certain occasions by special methods that were not uniform with his fixed laws? Does not this hypothesis imply that his fixed laws were insufficient for the purposes for which he designed them, and that he had to resort to other means? How do you get over this difficulty?
Sophereus. What you propound as a difficulty does not disturb me. I understand the distinction which you make between the natural and the supernatural. I can see in the solar system how the law of gravitation and all the other laws of motion operate; but I do not see, nor can you explain, how these laws, or the laws of chemical combination or any other laws, can have evolved the plan of the solar system out of a mass of fiery vapor. I can understand the enactment and establishment of laws of motion, of chemical combination, and of the mechanical action of different states of matter upon each other, to operate in fixed and invariable ways, in certain conditions. But I do not see that there is any interruption or displacement of these laws, after they are established, when an end that is to be accomplished calls for a complex system of new objects among which they are to operate. It is manifest that the question is whether the different bodies of the solar system have been formed and placed in their respective positions, according to a special design of their relative distances, magnitudes, and orbits, or whether these are the results of the operation of fixed laws, without any special interposition of a creating power. Astronomers have not explained how the latter hypothesis is anything more than a probable conjecture. It remains for me to consider whether the hypothesis of a special interposition, whereby the plan of the solar system has been made, is attended with the difficulty which you suggest. We are reasoning about a period of the remote past when this system of bodies did not exist, but when the general laws that were to govern all matter may be supposed to have been previously ordained. If we think of the solar system, conceived and projected by the Supreme Being, as a complex mechanism that was to exist in Nature, the occasion would be one calling for the exercise of infinite wisdom and power. The production of such a mechanism, to answer any ends for which it was intended that it should exist, implies attributes that transcend all our human experience of the qualities of power and wisdom. That it was an occasional exercise of power, in no way implies any irregularity or inconsistency of method, if the power was so exercised as to leave all the general laws of Nature in full operation, so that there would be no clashing between what you call the natural and the supernatural. I have first to ascertain what was the probably intended scope of the general laws which are supposed to have been ordained before the solar system came into existence. If it appears to have been the purpose of the constructor to have these laws work out this system of bodies without any special interposition and formative skill directly exercised, I need go no further. But I see no evidence of that purpose. No one has suggested anything but a theory on this subject, which is not supported by any satisfactory proofs. I am left, therefore, to the consideration of the question whether an act of special interposition, in the formation of a plan obviously calling for the exercise of infinite wisdom and power, is in any way inconsistent with the establishment of a system of laws which were to operate on these bodies and among them after they had come to exist. My conclusion, from what I have learned of the solar system, is, that in the exercise by the same being of the method which you call the natural, and the exercise of the method which you call the supernatural, there is no inconsistency; that each of the fixed laws of matter and motion was designed to have its own scope; and that each of them may well consist, within its limitations, with occasional exercises of power, for the production of objects that were to be operated upon by the laws, but of which they were not designed to be the producing cause. Thus it seems to me to be a rational conclusion that the law of gravitation, the general laws of motion, and all the other laws of matter, which preceded the existence of the solar system, were not designed to be the agents by which the plan of that system would be worked out, but that the plan was so formed and executed that the bodies composing it would be subject to the operation of laws enacted by the Infinite Will for the government of all the forms of matter. The question is, whether the plan of the solar system is due to the operation of the fixed laws, or to a special interposition; or, to state it in another way, whether the whole of the phenomena, the plan and arrangement of the solar system included, are to be referred to the operation of certain fixed laws as the producing agents, or whether some part of the phenomena, namely, the mechanism of the system, should be referred to the special interposition. I am taught, by the physics on which astronomers are now agreed, that gravitation is a force by which the particles of matter act on each other; that every particle of matter in the universe attracts every other particle with a force varying directly as their masses, and inversely as the square of the distance which separates them. This I understand to be the formula in which the law of universal gravitation is expressed. But, for the purpose of illustrating what I understand to be the operation of this force, I have constructed a diagram, in which two bodies are represented as A and B. From each of these bodies there radiates in all directions an attracting force, which acts directly upon every other body in the universe, and which is represented in the diagram by dotted lines. In the diagram, the bodies A and B are first supposed to be one thousand miles apart. A certain portion of the attracting rays proceeding from A would strike directly upon B. All the other rays proceeding in the same direction from A would pass on either side of B without striking it. If B is removed to the distance of two thousand miles from A, the sum total of the attractive force which A would exert upon B would be diminished by the square of the distance, because B would intercept just one fourth of the number of rays proceeding from A compared with the number which it intercepts when the two bodies are only one thousand miles apart; and the rays which B does not intercept would pass along through the realms of space, until they encountered some other body, on which they would exert a force that would follow the same law of diminution. In the diagram, the two bodies A and B may be single particles of matter or collections of particles; they are represented as cubes; but the law of direct action of the attracting force and the law of its diminution would be the same if the bodies were spheres or oblongs. The power of attraction which bodies exert upon each other resides in every individual particle of matter composing the body, and the attraction which that body exerts upon another body is the sum total of the attractions which proceed from all the particles composing the mass and which impinge upon that other body.
In the diagram the two bodies A and B are supposed to be of the same mass. If, as in the case of the sun and the earth, one of the bodies is of far greater mass than the other, then the attraction of the sun for the earth is the same as the attraction of the earth for the sun, because the action is mutual; but the sun, being the greater mass, tends, by reason of its correspondingly greater inertia, to remain comparatively stationary, or, in other words, it has a greater resistance to being pulled out of its normal position, while the earth, having less inertia, is more easily deflected from its straight course in which its momentum tends to carry it, and so travels in an orbit around the sun, the resisting or centrifugal pull of the earth, due to its inertia, exactly balancing the inward pull due to the mutual attraction. I understand that, besides the law of universal gravitation, there are two fundamental laws of motion. By one of these laws, if a body be set in motion and be acted on by no other than the projectile force, it will move forward in a straight line and with a uniform velocity forever. But by another law, if the moving body is acted on by another force than that which originally projected it in a straight line, it will deviate from that line in the direction of that other force and in proportion to it. If A, the earth, liable to be drawn toward B, the sun, by their mutual attraction, was originally projected into space, at a certain distance from the sun, by a force which would carry it on in a straight line, it would be acted on by two forces: the projectile force would cause it to move in a straight line; the force of the mutual attraction would cause it to deviate from that line in the direction of the sun. The result would be that the earth would be carried around the sun in a circular or an elliptical orbit. Every other planet in the solar system would be under the operation of the same compound forces governed by the same laws; and while the sun would exert upon each of them its force of attraction, and they would each exert upon the others an attractive force that would be diminished by the squares of their distances from one another, each of them would be deflected from the straight line that would have otherwise been the path of its motion, and the result would be a perpetual revolution around the body that could exert upon each just the amount of attraction requisite to overcome the projectile force by which it was first put in motion.
Kosmicos. You have made an ingenious explanation of the law of gravitation, which may or may not be correct. But now let me understand what you infer from this hypothesis, supposing it to be true. What should have prevented the law of gravitation and the laws of motion from working out this very system of bodies, by operating upon a mass of crude matter lying in the universe, supposing it to have been fiery vapor or anything else?
Sophereus. I have thus far arrived, by the aid of what astronomy teaches, at a complex system of physical laws, the law of universal gravitation, and the laws of motion. I must suppose that these laws had an intelligent author. I must suppose that they were enacted, in the same sense in which we speak of any rule of action ordained by a power competent to conceive of it and to put it into execution. To me, as I view the facts of the solar system, the idea that the law of gravitation and the laws of motion are to be regarded as mere phenomena of matter, or as qualities of matter according to which, from some inherent condition, it must act, does not explain the solar system. I can not explain to myself what I see, without asking myself how these qualities of matter came to exist. How came it to be a condition of all matter that its particles should attract each other by a certain force according to a certain rule? How came it to be a law of motion that bodies projected into space should continue to move on forever in a straight line, unless deviated from that line by some other force? To say that things happen, but that no power ever commanded them to happen; that things occur because they do occur, and not because some power has ordained that they shall occur, is to me an inconceivable kind of reasoning, if it be reasoning at all. Because men act or profess to act upon certain principles of moral conduct, I can not suppose that justice, and truth, and mercy are mere phenomena of human conduct, that they never had any origin as moral laws in the will of a lawgiver. For the same reason I can not suppose that the physical laws of matter, stupendous in their scope, and of unerring certainty in their operation, did not proceed from an enacting authority. In short, it seems to me that the conception of power, as something independent of the qualities of substance, is a logical necessity.
Kosmicos. I am not now trying to persuade you that the law of gravitation and the laws of motion did not have an intelligent author. For the purposes of the argument, I will concede that they were enacted, as you term it. You have explained your understanding of the operation of these; laws as they are expressed in the formula given by astronomers, and for the present I will assume that they operate in some such way. I will also concede that the idea of power in the abstract, as something independent of the qualities of substance, is necessary to the explanation of all physical phenomena. But I now recall your attention to the point which I originally suggested. Explain to me how it has happened that the being who you suppose established certain laws for the government of all matter has not allowed those laws to evolve out of diffused matter certain bodies which we find grouped together in the universe, but has specially interposed by another act, and constructed this system of bodies without the agency of his own laws. All that we know about the law of gravitation and the laws of motion we derive from observing the actions of these bodies which compose the solar system. We infer the existence of these laws from the actions of these bodies. Now tell me how you suppose that the same being who ordained these laws as fixed conditions to which matter was to be subjected, and made them to operate upon all matter, whether in a crude and unformed state or after it had become organized into bodies of definite shapes and dimensions, did not rely upon these inherent conditions of matter to produce those shapes and dimensions, but went to work by special interposition, and produced the mechanism of the solar system as a human artificer would make a machine of a corresponding character.
Sophereus. We must take things in a certain order. I understand you to concede, for the present, that the laws of gravitation and motion must, or may, have existed before the sun and the planets were formed. We are agreed, then, that power has an existence anterior to and separate from the qualities of substance. What, then, is the difficulty attending the hypothesis that the Infinite Power, which devised and established the laws of gravitation and motion before the bodies of the solar system were formed, so fashioned and distributed those bodies that while each of them shall exert upon every other a certain amount of direct attraction, that attraction shall diminish in a certain fixed ratio, as the distance between them increases? We can not suppose that the relative magnitudes, weights, and distances of these bodies were accidental, or that they resulted from the property of attraction that was given to the particles of matter of which they are composed. That property of mutual attraction became at some time a fixed condition of all matter, but it will not account for the formation of a system of bodies so adjusted that the attracting force will act among them by a specific law, by the operation of which they will be prevented from exerting on each other an excessive amount of such force, or any amount but that which is exactly needful to preserve their relative distances from each other. Let it be supposed that the property of attraction was impressed upon all the particles of matter in the universe, and then that the Infinite Power, abstaining from all farther action, and without forming and arranging the bodies of the solar system upon any intentional plan, left all that plan to be worked out by that property of matter; what reason have we to conclude that the law of gravitation would, as the sole efficient cause, have produced just exactly this complex piece of mechanism, so wonderfully adjusted? What reason have we to conclude that the property of attraction, although ordained as an inherent quality of all matter, would not, if left without any special interposition, have resulted in some very different arrangement and disposition of the matter lying in the space now occupied by the solar system?
Kosmicos. Give me your idea of the condition which is called "chaos," and I will then explain to you why it is that you do not do justice to the scientific distinction between the natural and the supernatural method by which things have been produced as we see them.
Sophereus. I presume you do not mean to ask how I suppose chaotic matter came to exist. Its origin is one thing—its condition is another. In regard to its condition, it seems very plain that there was a period when diffused matter had not received the impress of the qualities or been subjected to the laws which we now recognize. Take the Mosaic hypothesis, where it speaks of the earth, for example, as "without form and void." In this terse expression, there is embraced the idea of a condition of matter without qualities, properties, or laws; lying in an utterly crude state, waiting to receive the impress of the divine will. The laws of motion have not begun to operate upon it; the laws of chemical combination have not been applied to it. It is a rational conclusion that this was the condition of things in that remote period of eternity before the solar system was formed. Chaos, then, was the condition of primeval matter before it had received the fixed properties that were afterward to belong to it, and before the laws that were ever afterward to govern it had been ordained. Lying in this utterly crude state, without tendencies, without combinations, without definite motion, floating in the universe without fixed form or qualities, it awaits the action of the Infinite Power. It pleases that power, out of its illimitable resources, to bestow upon this chaotic matter certain properties, and to subject it to certain laws. One of these properties is that its particles shall attract one another by a certain force; one of these laws is that this force shall operate by an invariable and fixed rule of direct action, and by an invariable and fixed rule of diminution, according to the distance of the particles from each other; and another law is that a body projected into space, by any force, shall continue to move in a straight line until and unless it is deflected from that line by some other force. There are, too, chemical properties belonging to matter as we know it, by which it takes on certain combinations and undergoes modifications and arrangements of its particles. All these properties, qualities, and laws—these unavoidable methods of action—must have been imposed upon the chaotic matter at some time by a power competent to establish them, and to put them in operation. But the laws and the methods of their operation do not account for the PLAN on which the solar system has been formed, consisting of different bodies of such shapes, dimensions, and relative distances, that the laws, when applied to them, will produce the wonderfully exact and perpetual movements which the telescope reveals. That PLAN is a creation, for which we must look to something more than the laws and properties of matter; and we can only find it in the will and purposes of the infinite artificer who devised the laws by which this mechanism was to be governed after it had been made, and who has so made it that it would be governed by them.
Kosmicos. I do not see that you have yet reached a stronger ground on which to rest the hypothesis of special interposition than that on which is based the hypothesis which imputes the formation of the solar system to certain fixed laws operating upon crude matter not yet formed into definite shapes or placed in certain relative positions. You will have to adduce some proof that has a stronger tendency to exclude the supposition that the mechanism of the solar system was produced by the laws of matter and motion working upon some material that lay in the condition which you have described as "chaos."
Sophereus. Let us, then, look a little farther into some of the details of this vast machine. Take one that is most obvious, and that lies the nearest to us; I mean the moon, which accompanies our earth as its satellite. The most remarkable thing about the motion of the moon is the fact that she makes one revolution on her axis in the same time that she takes to revolve around the earth, and consequently she always presents to us the same face, and her other side is never seen by human eyes. How came this to be the case? How came this to be the adjustment of the two motions, the axial revolution of the moon and her revolution around the earth, causing her always to present to us the same side? It is said by astronomers that the two motions are so exactly adjusted to each other that the longer axis of the moon always points to the earth, without the slightest variation. It is conceded, as I understand, to be infinitely improbable that this adjustment was the result of chance. A cause for it is therefore to be found. Where are we to look for that cause, unless we look for it in the will and design of the Creator, who established it for some special purpose?
Kosmicos. You are aware that there is a physical explanation of this phenomenon which accounts for it without the special design. This explanation is that the moon was once in a partially fluid state, and that she rotated on her axis in a period different from the present one. In such a condition, the attraction of the earth would produce great tides in the fluid substance of the moon; this attraction, combined with the centrifugal force of the moon's rotation on her own axis, would cause a friction, and this friction would retard the rate of her axial rotation, until it became coincident with the rate of her revolution around the earth. It is highly improbable that the moon was originally set in rotation on her axis with just the same velocity with which she was made to revolve around the earth. This improbability is based on the ellipticity of the moon's orbit, which is caused by the attraction of the sun. The mean distance of the moon from the earth is 240,300 miles; her smallest possible distance is 221,000 miles; and the greatest possible distance is 259,600. The usual oscillation between these extremes is about 13,000 miles on each side of the mean distance of 240,300. The diameter of the moon is 2,160 miles, or less than two sevenths of the earth's diameter. In volume she is about one fiftieth as large as the earth, but her density, or the specific gravity of her material, is supposed to be a little more than half of that of our globe; and her weight is about three and a half times the weight of the same bulk of water. When she is nearest to the sun, the superior attraction of that body tends to draw her out of her circular orbit around the earth; when she is farthest from the sun, this attraction is diminished, and thus her terrestrial orbit becomes slightly elliptical. But there is another attraction to be taken into account. This other attraction, in her former fluid condition, has given her the shape, not of a perfect sphere, but of an ellipsoid, or an elongated body with three unequal axes. The shortest of her axes is that around which she rotates; the next longest is that which points in the direction in which she is moving; and the longest of all points toward the earth. This shape of the moon, resulting from the earth's attraction, has been produced by drawing the matter of the moon which is nearest to the earth toward the earth, and by the centrifugal force which tends to throw outward the matter farthest from the earth. The substance of the moon being a liquid, so as to yield freely, she would be elongated in the direction of the earth. But if she was originally set in motion on her own axis at precisely the same rate with which she was made to revolve around the earth, the correspondence between the two motions could not have been kept up; her axial rotation would have varied, by reason of the fact that her relative distance from the sun and the earth varies with the ellipticity of her orbit around the earth, and thus the two motions would not correspond. But if we allow for the attraction of the earth upon a liquid or semi-liquid body, producing for the moon an elongated shape, her axial rotation would, if the two motions were in the beginning very near together, vary with her revolutions around the earth, and the correspondence between the two motions would be kept up. Here, then, you have a physical explanation of the phenomenon which strikes you as so remarkable—a result brought about by natural causes, without the supposition of what you call intentional design, or formative skill directly exercised by a supernatural interposition.
Sophereus. This is a very plausible theory, but it all depends upon two assumptions: First, it assumes it to be extremely improbable that the two motions were aboriginally made to correspond, by an intentional adjustment of the moon's weight, dimensions, and shape, upon such a plan that the laws of gravitation and movement would keep the two motions in exact correspondence. Why should not the rates of movement have been originally designed and put in execution as we find them? You anticipate the answer to this question by another assumption, namely, that the substance of the moon was at first in a fluid or semi-fluid state, so that she owed her present shape to the effect of the earth's attraction, and the centrifugal tendency of its most distant part to be thrown out of the line of its motion. I should be glad to have you explain why it is extremely improbable that the Creator planned this part of the solar system, the earth and its satellite, and so adjusted the dimensions, shapes, and weights of each of them, and fixed the rates of revolution of the satellite, that the laws of attraction and motion would find a mechanism which they would keep perpetually in operation, and thus preserve a constant relation between the moon's axial rotation and her revolution around the earth. I have thus far learned to regard the probable methods of the Creator somewhat differently from those which you scientists ascribe to him. Most of you, I observe, have a strong tendency to regard the Deity as having no specific plan in the production of anything, which plan he directly executed; and, so far as you regard a First Cause as the producing cause of phenomena, you limit its activity to the establishment of certain fixed laws, and explain all phenomena upon the hypothesis that the Supreme Being—if you admit one—made no special interpositions of his will and power in any direction, after he had established his system of general laws. But to me it seems that the weight of probability is entirely against your hypothesis. In this particular case of which we have been speaking, that of the moon's revolution, the supposed improbability of an original and intentional adjustment of the two motions turns altogether on the argument that if they had been so adjusted at the beginning they would not have kept on, and this argument is supported by the assumption that the moon was at first a mass of fluid. I do not understand this mode of making facts to support theories; and I wish you would explain to me why, in this particular instance, the inference of a divine and intentional plan in the structure of this part of the solar system is so extremely improbable. To me it seems so obvious a piece of invented mechanism, that I can not avoid the conclusion that it was the intentional work of a constructor, any more than I could if I were to find a piece of mechanism under circumstances which indicated that it was produced by human hands.
Kosmicos. You do not even yet do justice to the scientific method of reasoning. The deductions of science—the conclusions which the scientist draws from the phenomena of Nature—rest upon the postulate of fixed laws of Nature, which never change, and which have not been varied by any supernatural interference. We mean by a supernatural cause one which is not uniformly in operation, or which operates in some way different from the fixed laws which we have deduced from the observed order of the phenomena that we have studied and found to be invariable. We adopt this distinction between the natural and the supernatural because the observable phenomena of Nature do not furnish any means of discovering as a fact the operation of anything but the fixed laws, or any cause which has acted in a different way. Let us now apply this to the phenomena which we have been considering—the composition and arrangement of the solar system. What do we find? We find a system of bodies in the movements of which we detect certain fixed laws operating invariably in the same way. When the question is asked, How were these bodies produced? we have no means of reaching a conclusion except by reasoning upon the operation of the forces which these laws disclose, working on the primordial matter out of which the bodies became formed. It is for this reason that, in accounting for their existence, we speak of the method of their formation as the natural, in contradistinction to some other method which we call the supernatural; by which latter term we mean some mode in which there has been a power exerted differently from the established and fixed agency of the laws of matter, which constitute all that we have ever discovered. The nebular hypothesis affords a good illustration of the distinction which I am endeavoring to show you, whether it is well established or not, or is ever likely to be. It supposes that there was a mass of fiery vapor, floating in the space now occupied by the solar system. Under the operation of the laws of gravitation and motion, of mechanical forces and chemical combination, this crude matter becomes consolidated and formed into the different bodies known to us as the sun and the planets, and the laws which thus formed them continue to operate to keep them in the fixed relations to each other which resulted from the process of their formation. Whether as a matter of fact the solar system was formed in this way, this, or some other mode of operation through the action of certain established laws operating upon primeval matter, is what we call the natural method, in opposition to the supernatural; and we can not discover the supernatural method, because the closest and most extensive investigations never enable us to find in nature any method of operation but that which acts in a fixed and invariable way.
Sophereus. What you have now said brings me to a question that I have all along desired to ask you: How do you know that the Infinite Power never acts, or never has acted, in any way different from the established order of Nature? Is science able to determine this? If it is not, it must be for philosophy to consider whether there can have been, or probably has been, in operation at any time any cause other than those fixed laws of Nature which the scientist is able to deduce from observable phenomena. Because science can only discover certain fixed laws as the forces governing the bodies which compose the solar system, or governing the materials of which they are supposed to be made, it does not seem to me that a philosopher is precluded from deducing, by a proper method of reasoning upon a study of the solar system, the probable truth that its mechanism was specially planned and executed by a special act of the creating power. The degree to which this probability rises—whether it rises higher in the scale than any other hypothesis—must depend upon the inquiry whether any other hypothesis will better account for the existence of this great object, with its enormous mechanism, its adjustments, and its unerring movements. I must say, from what I have learned of this planetary system, with the sun as its center, viewed as a mechanism, that I can conceive of no hypothesis concerning its origin and formation which compares in probability with the hypothesis that it was directly and specially created, as we know it, by the Infinite Artificer.
Kosmicos. Pray, tell me what you mean by an act of creation? Did you or any other man ever see one? Can you tell what creation is?
Sophereus. I think that your question can be answered. Creation is the act of giving existence to something that did not previously exist. We see such acts performed by men, very frequently, so that we do not hesitate to speak of the product as a created thing. We do not see acts of creation performed by the Infinite Power, but it is surely not unphilosophical to suppose that what can be and is done by finite human faculties, can be and has been done by the infinite faculties of the Deity, and done upon a scale and in a perfection that transcend everything that human power has produced. The sense in which I have been led to conceive of the solar system as a creation is the same as that by which I represent to myself the production, by human power and skill, of some physical object which never existed before, such as a machine, a statue, a picture, a pyramid, or an obelisk; any concrete object which, whether or not new of its kind, did not as an individual object previously exist. In weighing the probabilities as to the mode in which the solar system came to exist, the reasons why the idea of its special creation stands by far the highest in the scale are these: 1. There must have been a period when this great object in nature did not exist, and therefore it must have been caused to exist. 2. The necessary hypothesis of a causing power leads inevitably to the conclusion that the power was adequate to the production of a system of bodies so proportioned and arranged that they would act on each other by certain fixed rules. 3. The causing or creating power must have conceived the proportions and arrangements of the different bodies as a plan, and must have executed that plan according to the conception. 4. While as a theory we can represent to ourselves that the causing power established certain laws of matter and motion, which would by their fixed operation on crude substances lying in the universe produce this system of bodies without any preconceived and predetermined plan, without any occasional or special interposition, yet that the system, as we find it, is a product of such a nature as to have called for and required the special interposition of a formative will. For, if we proceed upon the hypothesis that this enormous and exact mechanism was nothing but the product of certain pre-established laws operating on crude matter, without direct and special interposition exerted in the execution of a formed design, we have to obtain some definite conception, and to find some proof of a method by which these laws can have operated to produce this system of bodies exactly as we know them to be proportioned and arranged. Astronomical science, and all other science, has not discovered, or even suggested, any method by which this result could have been brought about, without a special act of creation in the execution of an original design. On the other hand, the hypothesis of a special interposition in the execution of a preconceived plan of construction is the most rational, the most in accordance with probability, because it best meets the requirements of the case. These requirements were that the proportions, arrangements, and relations of the different bodies composing one grand mechanism, should be such that the laws of gravitation and motion would operate upon and among them so as to keep them in uniform and unvarying movement.
Kosmicos. Very well. You have now come to the end of your reasoning. Tell me, then, why it is not just as rational a supposition that the Deity conceived of the plan of the solar system as a product that would result, and that he intended should result, from the operation of his fixed laws of matter and motion, and then left it to the unerring certainty of their operation to produce the mechanism by the process of gradual evolution?
Sophereus. The being who is supposed to hold and exercise supreme power over the universe, holds a power to execute, by direct and special creation, any design which he conceives and proposes to accomplish. I am prepared to concede that the process of gradual evolution can produce and apparently has produced some results. But when we are looking for the probable methods of the Deity in the production of such a mechanism as the solar system, we must recognize the superior probability of the direct method, because the indirect method which you describe as gradual evolution does not seem adequate to the production of such a system of bodies. If we could obtain facts which could have any tendency to show that, without any special interposition, the mechanism of the solar system, or any part of it, is a mere result of the working of the laws of gravitation and motion upon a mass of crude matter, we might yield assent to the probability of that occurrence. But of course we have no such facts; we have nothing but theories; and therefore there appears nothing to exclude the probable truth of a special creation.
Kosmicos. We shall not convince each other. You have stated your conclusions concerning the solar system fairly enough, and I have endeavored to answer them. But now let me understand how you propose to apply them to other departments of Nature, in which we have means of closer investigation. You will find it very difficult, I imagine, to maintain that every organism, every plant, animal, fish, insect, or bird, is a special creation, or even that man himself is.
Sophereus. Let me state for myself just what my conclusions are in regard to the solar system. You will then know what the convictions are with which I shall come to the study of other departments. I have arrived at the conception of an Infinite Being having the power to create anything that seems to him good; and I have experienced no difficulty in conceiving what an act of creation is. I have also reached the conviction that there is one great object in Nature, the existence of which I can not account for without the hypothesis of some special act of creation. Whether I shall find this to be the case in regard to every other object in Nature, I can not now tell. Perhaps, as many of these objects are nearer to us, and more within our powers of investigation, the result may be different. I shall endeavor to keep my mind open to the necessary discriminations which facts may disclose. Possibly I may find reason to reverse the conclusions at which I have arrived in regard to the solar system, if I find that the hypothesis of evolution is fairly sustained by other phenomena.
Note.—Newton, whose reasoning powers have certainly not been surpassed by those of any other philosopher, ancient or modern, not only deduced the existence of a personal God from the phenomena of Nature, but he felt no difficulty in ascribing to the Deity those personal attributes which the phenomena of Nature show that he must possess, because without them "all that diversity of natural things which we find suited to different times and places" could not have been produced. They could, he reasons, "arise from nothing but the ideas and will of a Being necessarily existing." Newton does indeed say that all our notions of God are taken from the ways of mankind; but this is by way of allegory and similitude. There is a likeness, but not a perfect likeness. There is therefore no necessity for ascribing to God anthropomorphic attributes, because the enlargement of the faculties and powers to superhuman and boundless attributes takes them out of the category of anthropomorphic qualities and capacities. In his "Mathematical Principles of Natural Philosophy," Newton had occasion to treat of the theory of vortices, as a hypothesis by which the formation of the solar system is to be explained. The "General Scholium," by which he concludes the third book of his "Principia," lays down the masterly reasoning by which he maintains that the bodies of the solar system, while they persevere in their orbits by the mere laws of gravity, could by no means have at first derived the regular position of the orbits themselves from those laws. I had written the whole of the preceding chapter on the origin of the solar system just as I have printed it, before I looked into the "Principia" to see what confirmation might be derived from Newton's speculations. I found that while I had not included the comets in my examination of the solar system, but had confined myself to the bodies that are at all times within the reach of the telescope, the same deductions are re-enforced by the comets, eccentric as are the orbits through which they range into and out of our system. I quote the entire Scholium, as given in Motte's English translation of the "Principia" from the Latin in which Newton wrote, published with a Life by Chittenden, at New York, in the year 1848.