mere play of words and notions, like a theory of music to the deaf, or like the geometry of light to the blind. The connection of the parts and their logical dependencies may be seen and remembered; but the whole is groundless and hollow, unsustained by living contact, unaccompanied with any realizing intuition which exists by and in the act that affirms its existence, which is known, because it is, and is, because it is known. The words of Plotinus, in the assumed person of Nature, hold true of the philosophic energy. To theoroun mou, theoraema poiei, osper oi geometrai theorountes graphousin; all’ emon mae graphousaes, theorousaes de, uphistantai ai ton somaton grammai. With me the act of contemplation makes the thing contemplated, as the geometricians contemplating describe lines correspondent; but I not describing lines, but simply contemplating, the representative forms of things rise up into existence. The postulate of philosophy and at the same time the test of philosophic capacity, is no other than the heaven-descended KNOW THYSELF! (E coelo descendit, Gnothi seauton). And this at once practically and speculatively. For as philosophy is neither a science of the reason or understanding only, nor merely a science of morals, but the science of BEING altogether, its primary ground can be neither merely speculative nor merely practical, but both in one. All knowledge rests on the coincidence of an object with a subject. (My readers have been warned in a former chapter that, for their convenience as well as the writer’s, the term, subject, is used by me in its scholastic sense as equivalent to mind or sentient being, and as the necessary correlative of object or quicquid objicitur menti.) For we can know that only which is true: and the truth is universally placed in the coincidence of the thought with the thing, of the representation with the object represented. Now the sum of all that is merely OBJECTIVE, we will henceforth call NATURE, confining the term to its passive and material sense, as comprising all the phaenomena by which its existence is made known to us. On the other hand the sum of all that is SUBJECTIVE, we may comprehend in the name of the SELF or INTELLIGENCE. Both conceptions are in necessary antithesis. Intelligence is conceived of as exclusively representative, nature as exclusively represented; the one as conscious, the other as without consciousness. Now in all acts of positive knowledge there is required a reciprocal concurrence of both, namely of the conscious being, and of that which is in itself unconscious. Our problem is to explain this concurrence, its possibility and its necessity.