§ [196]. It is noteworthy that it is only in this age of a highly systematic natural science that different systems are projected, as in the case just noted of the rivalry between the strictly mechanical, or corpuscular, theory and the newer theory of energetics. It has heretofore been taken for granted that although there may be many philosophies, there is but one body of science. And it is still taken for granted that the experimental detail of the individual science is a common fund, to the progressive increase of which the individual scientist contributes the results of his special research; there being rival schools of mechanics, physics, or chemistry, only in so far as fundamental conceptions or principles of orderly arrangement are in question. But philosophy deals exclusively with the most fundamental conceptions and the most general principles of orderly arrangement. Hence it is significant of the very task of philosophy that there should be many tentative systems of philosophy, even that each philosopher should project and construct his own philosophy. Philosophy as the truth of synthesis and reconciliation, of comprehensiveness and coördination, must be a living unity. It is a thinking of entire experience, and can be sufficient only through being all-sufficient. The heart of every philosophy is a harmonizing insight, an intellectual prospect within which all human interests and studies compose themselves. Such knowledge cannot be delegated to isolated co-laborers, but will be altogether missed if not loved and sought in its indivisible unity. There is no modest home-keeping philosophy; no safe and conservative philosophy, that can make sure of a part through renouncing the whole. There is no philosophy without intellectual temerity, as there is no religion without moral temerity. And the one is the supreme interest of thought, as the other is the supreme interest of life.

Progress in Philosophy. The Sophistication or Eclecticism of the Present Age.

§ [197]. Though the many philosophies be inevitable, it must not be concluded that there is therefore no progress in philosophy. The solution from which every great philosophy is precipitated is the mingled wisdom of some latest age, with all of its inheritance. The "positive" knowledge furnished by the sciences, the refinements and distinctions of the philosophers, the ideals of society—these and the whole sum of civilization are its ingredients. Where there is no single system of philosophy significant enough to express the age, as did the systems of Plato, Thomas Aquinas, Descartes, Locke, Kant, Hegel, and the others who belong to the roll of the great philosophers, there exists a general sophistication, which is more elusive but not less significant. The present age—at any rate from its own stand-point—is not an age of great philosophical systems. Such systems may indeed be living in our midst unrecognized; but historical perspective cannot safely be anticipated. It is certain that no living voice is known to speak for this generation as did Hegel, and even Spencer, for the last. There is, however, a significance in this very passing of Hegel and Spencer,—an enlightenment peculiar to an age which knows them, but has philosophically outlived them. There is a moral in the history of thought which just now no philosophy, whether naturalism, or transcendentalism, realism or idealism, can fail to draw. The characterization of this contemporary eclecticism or sophistication, difficult and uncertain as it must needs be, affords the best summary and interpretation with which to conclude this brief survey of the fortunes of philosophy.

Metaphysics. The Antagonistic Doctrines of Naturalism and Absolutism.

§ [198]. Since the problem of metaphysics is the crucial problem of philosophy, the question of its present status is fundamental in any characterization of the age. It will appear from the foregoing account of the course of metaphysical development that two fundamental tendencies have exhibited themselves from the beginning. The one of these is naturalistic and empirical, representing the claims of what common sense calls "matters of fact"; the other is transcendental and rational, representing the claims of the standards and ideals which are immanent in experience, and directly manifested in the great human interests of thought and action. These tendencies have on the whole been antagonistic; and the clear-cut and momentous systems of philosophy have been fundamentally determined by either the one or the other.

Thus materialism is due to the attempt to reduce all of experience to the elements and principles of connection which are employed by the physical sciences to set in order the actual motions, or changes of place, which the parts of experience undergo. Materialism maintains that the motions of bodies are indifferent to considerations of worth, and denies that they issue from a deeper cause of another order. The very ideas of such non-mechanical elements or principles are here provided with a mechanical origin. Similarly a phenomenalism, like that of Hume, takes immediate presence to sense as the norm of being and knowledge. Individual items, directly verified in the moment of their occurrence, are held to be at once the content of all real truth, and the source of those abstract ideas which the misguided rationalists mistake for real truth.

But the absolutist, on the other hand, contends that the thinker must mean something by the reality which he seeks. If he had it for the looking, thought would not be, as it so evidently is, a purposive endeavor. And that which is meant by reality can be nothing short of the fulfilment or final realization of this endeavor of thought. To find out what thought seeks, to anticipate the consummation of thought and posit it as real, is therefore the first and fundamental procedure of philosophy. The mechanism of nature, and all matters of fact, must come to terms with this absolute reality, or be condemned as mere appearance. Thus Plato distinguishes the world of "generation" in which we participate by perception, from the "true essence" in which we participate by thought; and Schelling speaks of the modern experimental method as the "corruption" of philosophy and physics, in that it fails to construe nature in terms of spirit.

Concessions from the Side of Absolutism. Recognition of Nature. The Neo-Fichteans.

§ [199]. Now it would never occur to a sophisticated philosopher of the present, to one who has thought out to the end the whole tradition of philosophy, and felt the gravity of the great historical issues, to suffer either of these motives to dominate him to the exclusion of the other. Absolutism has long since ceased to speak slightingly of physical science, and of the world of perception. It is conceded that motions must be known in the mechanical way, and matters of fact in the matter-of-fact way. Furthermore, the prestige which science enjoyed in the nineteenth century, and the prestige which the empirical and secular world of action has enjoyed to a degree that has steadily increased since the Renaissance, have convinced the absolutist of the intrinsic significance of these parts of experience. They are no longer reduced, but are permitted to flourish in their own right. From the very councils of absolute idealism there has issued a distinction which is fast becoming current, between the World of Appreciation, or the realm of moral and logical principles, and the World of Description, or the realm of empirical generalizations and mechanical causes.[402:1] It is indeed maintained that the former of these is metaphysically superior; but the latter is ranked without the disparagement of its own proper categories.

With the Fichteans this distinction corresponds to the distinction in the system of Fichte between the active moral ego, and the nature which it posits to act upon. But the neo-Fichteans are concerned to show that the nature so posited, or the World of Description, is the realm of mechanical science, and that the entire system of mathematical and physical truth is therefore morally necessary.[403:2]