In the preceding chapter, it has, I trust, been made apparent, that, whatever may hereafter be the case, we, looking merely at the present state of our knowledge, must pronounce the metaphysical method to be unequal to the task, often imposed upon it, of discovering the laws which regulate the movements of the human mind. We are, therefore, driven to the only remaining method, according to which mental phenomena are to be studied, not simply as they appear in the mind of the individual observer, but as they appear in the actions of mankind at large. The essential opposition between these two plans is very obvious: but it may perhaps be well to bring forward further illustration of the resources possessed by each for the investigation of truth; and for this purpose, I will select a subject which, though still imperfectly understood, supplies a beautiful instance of the regularity with which, under the most conflicting circumstances, the great Laws of Nature are able to hold their course.
The case to which I refer, is that of the proportion kept up in the births of the sexes; a proportion which if it were to be greatly disturbed in any country, even for a single generation, would throw society into the most serious confusion, and would infallibly cause a great increase in the vices of the people.[303] Now, it has always been suspected that, on an average, the male and female births are tolerably equal; but, until very recently, no one could tell whether or not they are precisely equal, or, if unequal, on which side there is an excess.[304] The births being the physical result of physical antecedents, it was clearly seen that the laws of the births must be in those antecedents; that is to say, that the causes of the proportion of the sexes must reside in the parents themselves.[305] Under these circumstances, the question arose, if it was not possible to elucidate this difficulty by our knowledge of animal physiology; for it was plausibly said, ‘Since physiology is a study of the laws of the body,[306] and since all births are products resulting from the body, it follows that if we know the laws of the body, we shall know the laws of the birth.’ This was the view taken by physiologists of our origin;[307] and this is precisely the view taken by metaphysicians of our history. Both parties believed that it was possible at once to rise to the cause of the phenomenon, and by studying its laws predict the phenomenon itself. The physiologist said, ‘By studying individual bodies, and thus ascertaining the laws which regulate the union of the parents, I will discover the proportion of the sexes, because the proportion is merely the result to which the union gives rise.’ Just in the same way, the metaphysician says, ‘By studying individual minds, I will ascertain the laws which govern their movements; and in that way I will predict the movements of mankind, which are obviously compounded of the individual movements.’[308] These are the expectations which have been confidently held out, by physiologists respecting the laws of the sexes, and by metaphysicians respecting the laws of history. Towards the fulfilment, however, of these promises the metaphysicians have done absolutely nothing; nor have the physiologists been more successful, although their views have the support of anatomy, which admits of the employment of direct experiment, a resource unknown to metaphysics. But towards settling the present question, all this availed them nothing; and physiologists are not yet possessed of a single fact which throws any light on this problem: Is the number of male births equal to female births—is it greater, or is it less?
These are questions to which all the resources of physiologists, from Aristotle down to our own time, afford no means of reply.[309] And yet at the present day we, by the employment of what now seems a very natural method, are possessed of a truth which the united abilities of a long series of eminent men failed to discover. By the simple experiment of registering the number of births and their sexes; by extending this registration over several years, in different countries,—we have been able to eliminate all casual disturbances, and ascertain the existence of a law which, expressed in round numbers, is, that for every twenty girls there are born twenty-one boys: and we may confidently say, that although the operations of this law are of course liable to constant aberrations, the law itself is so powerful, that we know of no country in which during a single year the male births have not been greater than the female ones.[310]
The importance and the beautiful regularity of this law make us regret that it still remains an empirical truth, not having yet been connected with the physical phenomena by which its operations are caused.[311] But this is immaterial to my present purpose, which is only to notice the method by which the discovery has been made. For this method is obviously analogous to that by which I propose to investigate the operations of the human mind; while the old and unsuccessful method is analogous to that employed by the metaphysicians. As long as physiologists attempted to ascertain the laws of the proportion of sexes by individual experiments, they effected absolutely nothing towards the end they hoped to achieve. But when men became dissatisfied with these individual experiments, and instead of them, began to collect observations less minute, but more comprehensive, then it was that the great law of nature, for which during many centuries they had vainly searched, first became unfolded to their view. Precisely in the same way, as long as the human mind is only studied according to the narrow and contracted method of metaphysicians, we have every reason for thinking that the laws which regulate its movements will remain unknown. If, therefore, we wish to effect anything of real moment, it becomes necessary that we should discard those old schemes, the insufficiency of which is demonstrated by experience as well as by reason; and that we should substitute in their place such a comprehensive survey of facts as will enable us to eliminate those disturbances which, owing to the impossibility of experiment, we shall never be able to isolate.
The desire that I feel to make the preliminary views of this Introduction perfectly clear, is my sole apology for having introduced a digression which, though adding nothing to the strength of the argument, may be found useful as illustrating it, and will at all events enable ordinary readers to appreciate the value of the proposed method. It now remains for us to ascertain the manner in which, by the application of this method, the laws of mental progress may be most easily discovered.
If, in the first place, we ask what this progress is, the answer seems very simple: that it is a two-fold progress, Moral and Intellectual; the first having more immediate relation to our duties, the second to our knowledge. This is a classification which has been frequently laid down, and with which most persons are familiar. And so far as history is a narration of results, there can be no doubt that the division is perfectly accurate. There can be no doubt that a people are not really advancing, if, on the one hand, their increasing ability is accompanied by increasing vice, or if, on the other hand, while they are becoming more virtuous, they likewise become more ignorant. This double movement, moral and intellectual, is essential to the very idea of civilization, and includes the entire theory of mental progress. To be willing to perform our duty is the moral part; to know how to perform it is the intellectual part: while the closer these two parts are knit together, the greater the harmony with which they work; and the more accurately the means are adapted to the end, the more completely will the scheme of our life be accomplished, and the more securely shall we lay a foundation for the further advancement of mankind.
A question, therefore, now arises of great moment: namely, which of these two parts or elements of mental progress is the most important. For the progress itself being the result of their united action, it becomes necessary to ascertain which of them works more powerfully, in order that we may subordinate the inferior element to the laws of the superior one. If the advance of civilization, and the general happiness of mankind, depend more on their moral feelings than on their intellectual knowledge, we must of course measure the progress of society by those feelings; while if, on the other hand, it depends principally on their knowledge, we must take as our standard the amount and success of their intellectual activity. As soon as we know the relative energy of these two components, we shall treat them according to the usual plan for investigating truth; that is to say, we shall look at the product of their joint action as obeying the laws of the more powerful agent, whose operations are casually disturbed by the inferior laws of the minor agent.
In entering into this inquiry, we are met by a preliminary difficulty, arising from the loose and careless manner in which ordinary language is employed on subjects that require the greatest nicety and precision. For the expression, Moral and Intellectual Progress, is suggestive of a serious fallacy. In the manner in which it is generally used, it conveys an idea that the moral and intellectual faculties of men are, in the advance of civilization, naturally more acute and more trustworthy than they were formerly. But this, though it may possibly be true, has never been proved. It may be that, owing to some physical causes still unknown, the average capacity of the brain is, if we compare long periods of time, becoming gradually greater; and that therefore the mind, which acts through the brain, is, even independently of education, increasing in aptitude and in the general competence of its views.[312] Such, however, is still our ignorance of physical laws, and so completely are we in the dark as to the circumstances which regulate the hereditary transmission of character, temperament,[313] and other personal peculiarities, that we must consider this alleged progress as a very doubtful point; and, in the present state of our knowledge, we cannot safely assume that there has been any permanent improvement in the moral or intellectual faculties of man, nor have we any decisive ground for saying that those faculties are likely to be greater in an infant born in the most civilized part of Europe, than in one born in the wildest region of a barbarous country.[314]
Whatever, therefore, the moral and intellectual progress of men may be, it resolves itself not into a progress of natural capacity,[315] but into a progress, if I may so say, of opportunity; that is, an improvement in the circumstances under which that capacity after birth comes into play. Here, then, lies the gist of the whole matter. The progress is one, not of internal power, but of external advantage. The child born in a civilized land is not likely, as such, to be superior to one born among barbarians; and the difference which ensues between the acts of the two children will be caused, so far as we know, solely by the pressure of external circumstances; by which I mean the surrounding opinions, knowledge, associations; in a word, the entire mental atmosphere in which the two children are respectively nurtured.
On this account it is evident, that if we look at mankind in the aggregate, their moral and intellectual conduct is regulated by the moral and intellectual notions prevalent in their own time. There are, of course, many persons who will rise above those notions, and many others who will sink below them. But such cases are exceptional, and form a very small proportion of the total amount of those who are nowise remarkable either for good or for evil. An immense majority of men must always remain in a middle state, neither very foolish nor very able, neither very virtuous nor very vicious, but slumbering on in a peaceful and decent mediocrity, adopting without much difficulty the current opinions of the day, making no inquiry, exciting no scandal, causing no wonder, just holding themselves on a level with their generation, and noiselessly conforming to the standard of morals and of knowledge common to the age and country in which they live.