Chapter II: The Nature of Humanity

This difference becomes directly evident when man observes that in the waking state he is on the one hand in the midst of experiences which must come and go, while on the other hand he also has experiences of which this cannot be said. It comes out most distinctly when we compare the conscious experiences of man with those of the animal. The animal experiences the influences of the outer world with great regularity. Under the influences of heat and cold it becomes conscious of pain or pleasure, and its experience of thirst and hunger is subject to bodily processes which take a regular and periodic course. Man's life is not exhausted by experiences such as these. He can develop wishes and cravings transcending all these things. For the animal, could we but pursue the matter far enough, we should always be able to indicate—within the body or outside it—the precise cause for any given action or sensation. With man it is not so. He can give birth to wishes and desires for whose origin no external cause—whether in the body or outside it—is sufficient. Everything that belongs to this domain must be attributed to a special source, which the science of the supersensible recognizes to be the *I or Ego of man. The I* may therefore be described as the fourth member of the human being.