Now what has experimental science to say about the conscience? It does not say that it is the voice of God—a fact by no means calculated to disturb those who remember that physical investigation is not concerned with such speculations. Half the mischief and misunderstandings which occur over these border questions, which are, so to speak, under two jurisdictions, arise from our forgetting in what capacity and by what principles certain well-known scientific men have made pronouncements on matters such as conscience, morality and religion. There are two sides to them, the physical and the hyper-physical or metaphysical. And here it may not be amiss to offer a suggestion that one should mistrust that parrot cry so often heard from men who speak most confidently about that which they know least, that metaphysic is synonymous with unreality, or in plainer words, moonshine. A very little reflection will be sufficient to satisfy us that without the aid of conceptions higher than those of sense-experience—and that is all the word metaphysic means—it would be absolutely impossible to formulate a single scientific generalisation. What is the very concept of law, or system, but a metaphysical idea? To cease to be metaphysical would be to cease to be rational, to have no higher or wider conceptions than those of a dog. Hence, like M. Jourdain, who had been talking prose all his life without knowing it, some of our most daring anti-metaphysicians have been philosophising by the very method they had in their ignorance so contemptuously denounced.
Therefore, when we hear from Mr. Spencer that conscience, so far from being the voice of God, is but "the capitalised instinct of the tribe," an empirical fact established by heredity, just like fan-tails in pigeons; when Mr. Clifford popularises this teaching in St. George's Hall by announcing that conscience is the voice "of man bidding us to live for man," and Mr. Leslie Stephen tells us that the Socratic conception of conscience "is part of an obsolete form of speculation," we know precisely what judgment to pass upon their assertions. They are speaking, one and all, of the historical growth or natural evolution of that rational faculty in man which they, equally with their opponents, describe as the conscience. And keeping within those limits they are strictly accurate in what they say. Who is there that does not know that time was when the inhabitants of Europe were as destitute of moral instincts, and therefore of a conscience, as the Tonga islanders? Who does not know that man, instead of beginning at the top and tumbling headlong to the bottom, really began at the bottom and learnt everything by a very severe discipline in the hardest of all schools, that of experience? Certainly, we are ignorant of none of those things, and therefore readily assent to Mr. Spencer's teaching that conscience is not a fixed criterion of morality, but a faculty in a ceaseless state of transformation, "in a perpetual state of becoming," that its dicta are, in a certain sense, constantly changing and improving with the progress and development of the race. Certainly, as scientists and anthropologists, we should say precisely the same thing. We should recognise the developed conscience in man as obedient to the law of growth equally with his physical organisation, because we know of men now existent in whom the faculty is still in a very rudimentary state. Every advance in humanitarianism, in our treatment of men and animals, is evidence to us of the illimitable capacities of moral expansion in our nature, and therefore of the growth of conscience, or the moral sentiment.
But are we to conclude therefrom that conscience is nothing more than a product of organic evolution? It is a shallow philosophy, a surface system, indeed, which is content with such an estimate, and is only possible in a school of bald empiricism which imprisons man within the boundaries of his sense-experience, and resolves him into a string of feelings bound together, like a rope of sand, by nothing. The truth is, that Mr. Spencer, Mr. Bain, Mr. Mill and the whole corps of experimental philosophers are confusing the reality with its outward manifestation or history. Indeed, by their principles they are constrained to do so. Once affirm that nothing beyond the reach of your sensory organs is trustworthy, and conscience must be, like the nervous system, the development of a shock or a thrill. But it has never apparently dawned upon these thinkers that the very distinguishing note of conscience, its compulsory power, its assumption of authority to command the obedience of the will and its capacity to torment the soul with an overmastering remorse—to make a man say, "my sin is greater than I can bear"—is left wholly unexplained and unaccounted for in the historical analysis with which they favour us. What we want to know is: Whence has conscience the strange, mysterious power to influence us even in the sanctuary of our thoughts; why does the wicked man flee when no one pursueth except that the sleepless eye of his own outraged conscience is upon him and he cannot tolerate its reproachful gaze? Nowhere do we feel the inadequacy of the sense-philosophy more piercingly than in this matter of conscience. It has cut the world in twain and treated it as a piece of mechanism and reduced man to the position of an automaton.
But the facts are too strong; Nature is too strong. Every time some splendid heroism, some complete self-surrender is made; every time some deed of moral enthusiasm thrills the pulses of the world, or some lonely man or woman succeeds in crushing some infamous desire; every time for the sake of the good, for the sake of the right alone, we resist "even unto blood," conscience is exalted and enthroned above the stars, lifted utterly out of the low and insignificant category of physical experiences in which they would vainly endeavour to imprison it.
The commanding voice is heard throughout the ages, and men will, men must, ask: Who is it—what is it that spoke? They will not be put off with the reply that all they hear is an echo of the past, reverberating throughout the race as the successive generations arise. Ah! but whence has it power to command me, even in the sanctuary of my deepest solitude, in the loneliness of my silent thoughts? No ancestral traditions, no shouts of blessing or curse of multitudes can influence me there. I am alone in the abysmal depths of my personality, solitary as though in a desert world, and yet the mysterious voice is heard, the solemn sense of obligation and duty makes itself felt. It bids me respect myself, my moral dignity, though no one be nigh; it bids me chase the phantoms of evil from my mind.
In vain do you attempt to evade its jurisdiction by pointing to the acknowledged facts that men form different estimates of their duties in different countries and in different ages. Conscience is not concerned with that. Such subordinate tasks as the formation of moral codes, the ascertainment of the conformity or nonconformity of certain precise acts with morality are the work of the reason. Conscience is no theoretical instructor. Far more than that, it is a practical commander. It speaks but one voice. Obey what you know to be right, for the right's sake alone. And conscience has never wavered in the inculcation of that precept. The reason of man has been constantly advancing, discovering the content of the moral law just as it has been discovering the content of the geometrical, mathematical or musical law; but conscience, like the polar star, has been pointing steadily in one direction, the direction of duty, without error, without failure. "An erring conscience," says the ethical master, "is a chimera."
We learn, thus, from the teaching of both schools that conscience is at once the voice of man, the accumulated and concentrated moral experience of the race, but still more the voice of the eternal Reason which is revealed to our wondering eyes in the true, the good and the beautiful. If "this universe in its meanest province is in very deed the star-domed city of God"; if "the glory of the One breaks through it all in every place," what are we to say of that which is higher than the stars, more radiant than the sun, diviner than all worlds—the conscience of man nobly conformed to the great obedience of the everlasting laws? What are we to say of lives such as those of Gotama, Socrates and Christ? Nothing. Like the psalmist of Israel, I am struck dumb in the presence of a vision so majestical. Deveni in altitudinem maris et silui: "I came unto the great deeps and I held my peace".
[1] See his well-known essays, "The Ethics of Belief" and "The Ethics of Religion".
[2] Prof. J. Seth, in his Study of Ethical Principles, concludes from Mr. Huxley's Romanes lecture that "agnosticism could scarcely have been the final resting place for such a mind".
[3] I have ventured to repeat here a portion of the argument set forth in the chapter on "Ethics and Theism".