cognition exhausts and contains its object. There are, then, two separate maxims in his philosophy, one held consistently, viz., that nothing can be known which is different in character or nature from the object present to the thinking mind; the other, held incidentally and inconsistently, since it is destructive of all predication and knowledge, viz., that nothing can exist beyond the mind which is similar in nature or character to the “ideas” within it; or, to put the same thing in other words, that nothing can be revealed by an idea which is different from that idea in point of existence. The first maxim does not contradict the existence of external objects in space; the second contradicts every conception that the human mind can ever form, the most airy no less than the grossest. No idealist can go so far as to deny that his memory represents his past experience by inward similarity and conscious intention, or, if he prefers this language, that the moments or aspects of the divine mind represent one another and their general system. Else the idealist’s philosophy itself would be an insignificant and momentary illusion. CHAPTER V—NATURE UNIFIED AND MIND DISCERNED [Sidenote: Man’s feeble grasp of nature.] When the mind has learned to distinguish external objects and to attribute to them a constant size, shape, and potency, in spite of the variety and intermittence ruling in direct experience, there yet remains a great work to do before attaining a clear, even if superficial, view of the world. An animal’s customary habitat may have constant features and their relations in space may be learned by continuous exploration; but probably many other landscapes are also within the range of memory and fancy that stand in no visible relation to the place in which we find ourselves at a given moment. It is true that, at this day, we take it for granted that all real places, as we call them, lie in one space, in which they hold definite geometric relations to one another; and if we have glimpses of any region for which no room can be found in the single map of the universe which astronomy has drawn, we unhesitatingly relegate that region to the land of dreams. Since the Elysian Fields and the Coast of Bohemia have no assignable latitude and longitude, we call these places imaginary, even if in some dream we remember to have visited them and dwelt there with no less sense of reality than in this single and geometrical world of commerce. It belongs to sanity and common-sense, as men now possess them, to admit no countries unknown to geography and filling no part of the conventional space in three dimensions. All our waking experience is understood to go on in some part of this space, and no court of law would admit evidence relating to events in some other sphere.