Sanity, thy name is Greece. The Greek naturalists saw (what it needs only sanity to see) that the infinite substance of things was instinct with a perpetual motion and rhythmic order which were its life, and that the spirit of man was a spark from that universal fire. They made a magnificent beginning in understanding what the order of nature is, and what is the relation of its substance to its spirit. They were much nearer in their outlook and their wisdom to the Indians than we are apt to imagine. The Indians meant to be naturalists too; all serious philosophers must somehow make a naturalism of their chosen elements; only the Indians were carried away by an untutored imagination. The Greeks, for their part, also meant to be discerners of substance like the Indians, and sharers in the divine life. The object which they believed in and studied was precisely the same as that which the Indians felt to be breathing deeply around and within them: it was the infinite substance and life of things; all things not as they appear but as they truly are. This is the object which animals envisage in their perceptions from the beginning. The sciences, and all honest speculation, only substitute more refined ideas for the images of sense, to be descriptions of the same objects which the images of sense reveal. The notion that the object of sense is the very image created in sensation, or is an idea constructed afterwards by the intellect, is an aberration of confused psychologists; the intellectual construction, like the sensuous image, is and is meant to be only a symbol for the substance, whatever it may be, which confronts the living being when he eats or looks or frames a scientific hypothesis. Natural things, in their undiscovered inner texture, are the only things-in-themselves, and the object of every practical perception is the thing-in-itself, whatever its nature may happen to be.