It holds the conceptual content of the world to be identical for all human individuals (cp. pp. 84 ff.). According to Monistic principles, every human individual regards every other as akin to himself, because it is the same world-content which expresses itself in all. In the single conceptual world there are not as many concepts of "lion" as there are individuals who form the thought of "lion," but only one. And the concept which A adds to the percept of "lion" is identical with B's concept except so far as, in each case, it is apprehended by a different perceiving subject (cp. p. 85). Thought leads all perceiving subjects back to the ideal unity in all multiplicity, which is common to them all. There is but one ideal world, but it realises itself in human subjects as in a multiplicity of individuals. So long as man apprehends himself merely by self-observation, he looks upon himself as this particular being, but so soon as he becomes conscious of the ideal world which shines forth within him, and which embraces all particulars within itself, he perceives that the Absolute Reality lives within him. Dualism fixes upon the Divine Being as that which permeates all men and lives in them all. Monism finds this universal Divine Life in Reality itself. The ideal content of another subject is also my content, and I regard it as a different content only so long as I perceive, but no longer when I think. Every man embraces in his thought only a part of the total world of ideas, and so far, individuals are distinguished one from another also by the actual contents of their thought. But all these contents belong to a self-contained whole, which comprises within itself the thought-contents of all men. Hence every man, in so far as he thinks, lays hold of the universal Reality which pervades all men. To fill one's life with such thought-content is to live in Reality, and at the same time to live in God. The thought of a Beyond owes its origin to the misconception of those who believe that this world cannot have the ground of its existence in itself. They do not understand that, by thinking, they discover just what they demand for the explanation of the perceptual world. This is the reason why no speculation has ever produced any content which has not been borrowed from reality as it is given to us. A personal God is nothing but a human being transplanted into the Beyond. Schopenhauer's Will is the human will made absolute. Hartmann's Unconscious, made up of idea and will, is but a compound of two abstractions drawn from experience. Exactly the same is true of all other transcendent principles.