Since the Renaissance, moral philosophy has repeatedly reverted to the Greek ideal of natural excellence realized in social life, under the fostering care of intelligence in action. The return, however, has taken place under the influence of democratic polity, commercial expansion, and scientific reorganization. It has been a liberation more than a reversion. This combined return and emancipation, having transformed our practice of life in the last four centuries, will not be content till it has written itself clear in our theory of that practice. Whether the consequent revolution in moral philosophy be termed pragmatism or be given the happier title of the applied and experimental habit of mind is of little account. What is of moment is that intelligence has descended from its lonely isolation at the remote edge of things, whence it operated as unmoved mover and ultimate good, to take its seat in the moving affairs of men. Theory may therefore become responsible to the practices that have generated it; the good be connected with nature, but with nature naturally, not metaphysically, conceived, and social life be cherished in behalf of its own immediate possibilities, not on the ground of its remote connections with a cosmic reason and an absolute end.

There is a notion, more familiar than correct, that Greek thought sacrificed the individual to the state. None has ever known better than the Greek that the individual comes to himself and to his own only in association with others. But Greek thought subjected, as we have seen, both state and individual to an external cosmic order; and thereby it inevitably restricted the free use in doubt, inquiry, and experimentation, of the human intelligence. The anima libera, the free mind of the sixteenth century, of Galileo and his successors, was the counterpart of the disintegration of cosmology and its animistic teleology. The lecturer on political economy reminded us that his subject began, in the Middle Ages, as a branch of ethics, though, as he hastened to show, it soon got into better association. Well, the same company was once kept by all the sciences, mathematical and physical as well as social. According to all accounts it was the integrity of the number one and the rectitude of the square that attracted the attention of Pythagoras to arithmetic and geometry as promising fields of study. Astronomy was the projected picture book of a cosmic object lesson in morals, Dante’s transcript of which is none the less literal because poetic. If physics alone remained outside the moral fold, while noble essences redeemed chemistry, occult forces blessed physiology, and the immaterial soul exalted psychology, physics is the exception that proves the rule: matter was so inherently immoral that no high-minded science would demean itself by contact with it.

If we do not join with many in lamenting the stripping from nature of those idealistic properties in which animism survived, if we do not mourn the secession of the sciences from ethics, it is because the abandonment by intelligence of a fixed and static moral end was the necessary precondition of a free and progressive science of both things and morals; because the emancipation of the sciences from ready made, remote, and abstract values was necessary to make the sciences available for creating and maintaining more and specific values here and now. The divine comedy of modern medicine and hygiene is one of the human epics yet to be written; but when composed it may prove no unworthy companion of the medieval epic of other worldly beatific visions. The great ideas of the eighteenth century, that expansive epoch of moral perception which ranks in illumination and fervor along with classic Greek thought, the great ideas of the indefinitely continuous progress of humanity and of the power and significance of freed intelligence, were borne by a single mother—experimental inquiry.

The growth of industry and commerce is at once cause and effect of the growth in science. Democritus and other ancients conceived the mechanical theory of the universe. The notion was not only blank and repellent, because it ignored the rich social material which Plato and Aristotle had organized into their rival idealistic views; but it was scientifically sterile, a piece of dialectics. Contempt for machines as the accouterments of despised mechanics kept the mechanical conception aloof from these specific and controllable experiences which alone could fructify it. This conception, then, like the idealistic, was translated into a speculative cosmology and thrown like a vast net around the universe at large, as if to keep it from coming to pieces. It is from respect for the lever, the pulley, and the screw that modern experimental and mathematical mechanics derives itself. Motion, traced through the workings of a machine, was followed out into natural events and studied just as motion, not as a poor yet necessary device for realizing final causes. So studied, it was found to be available for new machines and new applications, which in creating new ends also promoted new wants, and thereby stimulated new activities, new discoveries, and new inventions. The recognition that natural energy can be systematically applied, through experimental observation, to the satisfaction and multiplication of concrete wants is doubtless the greatest single discovery ever imported into the life of man—save perhaps the discovery of language. Science, borrowing from industry, repaid the debt with interest, and has made the control of natural forces for the aims of life so inevitable that for the first time man is relieved from overhanging fear, with its wolflike scramble to possess and accumulate, and is freed to consider the more gracious question of securing to all an ample and liberal life. The industrial life had been condemned by Greek exaltation of abstract thought and by Greek contempt for labor, as representing the brute struggle of carnal appetite for its own satiety. The industrial movement, offspring of science, restored it to its central position in morals. When Adam Smith made economic activity the moving spring of man’s unremitting effort, from the cradle to the grave, to better his own lot, he recorded this change. And when he made sympathy the central spring in man’s conscious moral endeavor, he reported the effect which the increasing intercourse of men, due primarily to commerce, had in breaking down suspicion and jealousy and in liberating man’s kindlier impulses.

Democracy, the crucial expression of modern life, is not so much an addition to the scientific and industrial tendencies as it is the perception of their social or spiritual meaning. Democracy is an absurdity where faith in the individual as individual is impossible; and this faith is impossible when intelligence is regarded as a cosmic power, not an adjustment and application of individual tendencies. It is also impossible when appetites and desires are conceived to be the dominant factor in the constitution of most men’s characters, and when appetite and desire are conceived to be manifestations of the disorderly and unruly principle of nature. To put the intellectual center of gravity in the objective cosmos, outside of men’s own experiments and tests, and then to invite the application of individual intelligence to the determination of society, is to invite chaos. To hold that want is mere negative flux and hence requires external fixation by reason, and then to invite the wants to give free play to themselves in social construction and intercourse, is to call down anarchy. Democracy is estimable only through the changed conception of intelligence, that forms modern science, and of want, that forms modern industry. It is essentially a changed psychology. The substitution, for a priori truth and deduction, of fluent doubt and inquiry meant trust in human nature in the concrete; in individual honesty, curiosity, and sympathy. The substitution of moving commerce for fixed custom meant a view of wants as the dynamics of social progress, not as the pathology of private greed. The nineteenth century indeed turned sour on that somewhat complacent optimism in which the eighteenth century rested: the ideas that the intelligent self-love of individuals would conduce to social cohesion, and competition among individuals usher in the kingdom of social welfare. But the conception of a social harmony of interests in which the achievement by each individual of his own freedom should contribute to a like perfecting of the powers of all, through a fraternally organized society, is the permanent contribution of the industrial movement to morals—even though so far it be but the contribution of a problem.

Intellectually speaking, the centuries since the fourteenth are the true middle ages. They mark the transitional period of mental habit, as the so-called medieval period represents the petrifaction, under changed outward conditions, of Greek ideas. The conscious articulation of genuinely modern tendencies has yet to come, and till it comes the ethic of our own life must remain undescribed. But the system of morals which has come nearest to the reflection of the movements of science, democracy, and commerce, is doubtless the utilitarian. Scientific, after the modern mode, it certainly would be. Newton’s influence dyes deep the moral thought of the eighteenth century. The arrangements of the solar system had been described in terms of a homogeneous matter and motion, worked by two opposed and compensating forces: all because a method of analysis, of generalization by analogy, and of mathematical deduction back to new empirical details had been followed. The imagination of the eighteenth century was a Newtonian imagination; and this no less in social than in physical matters. Hume proclaims that morals is about to become an experimental science. Just as, almost in our own day, Mill’s interest in a method for social science led him to reformulate the logic of experimental inquiry, so all the great men of the Enlightenment were in search for the organon of morals which should repeat the physical triumphs of Newton. Bentham notes that physics has had its Bacon and Newton; that morals has had its Bacon in Helvétius, but still awaits its Newton; and he leaves us in no doubt that at the moment of writing he was ready, modestly but firmly, to fill the waiting niche with its missing figure.

The industrial movement furnished the concrete imagery for this ethical renovation. The utilitarians borrowed from Adam Smith the notion that through industrial exchange in a free society the individual pursuing his own good is led, under the guidance of the “invisible hand,” to promote the general good more effectually than if he had set out to do it. This idea was dressed out in the atomistic psychology which Hartley built out from Locke—and was returned at usurious rates to later economists.

From the great French writers who had sought to justify and promote democratic individualism, came the conception that, since it is perverted political institutions which deprave individuals and bring them into hostility, nation against nation, class against class, individual against individual, the great political problem is such a reform of law and legislation, civil and criminal, of administration, and of education as will force the individual to find his own interests in pursuits conducing to the welfare of others.

Tremendously effective as a tool of criticism, operative in abolition and elimination, utilitarianism failed to measure up to the constructive needs of the time. Its theoretical equalization of the good of each with that of every other was practically perverted by its excessive interest in the middle and manufacturing classes. Its speculative defect of an atomistic psychology combined with this narrowness of vision to make light of the constructive work that needs to be done by the state, before all can have, otherwise than in name, an equal chance to count in the common good. Thus the age-long subordination of economics to politics was revenged in the submerging of both politics and ethics in a narrow theory of economic profit; and utilitarianism, in its orthodox descendants, proffered the disjointed pieces of a mechanism, with a monotonous reiteration that looked at aright they form a beautifully harmonious organism.

Prevision, and to some extent experience, of this failure, conjoined with differing social traditions and ambitions, evoked German idealism, the transcendental morals of Kant and his successors. German thought strove to preserve the traditions which bound culture to the past, while revising these traditions to render them capable of meeting novel conditions. It found weapons at hand in the conceptions borrowed by Roman law from Stoic philosophy, and in the conceptions by which Protestant humanism had re-edited scholastic Catholicism. Grotius had made the idea of natural law, natural right and obligation, the central idea of German morals, as thoroughly as Locke had made the individual desire for liberty and happiness the focus of English and then of French speculation. Materialized idealism is the happy monstrosity in which the popular demand for vivid imagery is most easily reconciled with the equally strong demand for supremacy of moral values; and the complete idealistic materialism of Stoicism has always given its ideas a practical influence out of all proportion to their theoretical vogue as a system. To the Protestant, that is the German, humanist, Natural Law, the bond of harmonious reason in nature, the spring of social intercourse among men, the inward light of individual conscience, united Cicero, St. Paul, and Luther in blessed union; gave a rational, not superrational basis for morals, and provided room for social legislation which at the same time could easily be held back from too ruthless application to dominant class interests.