III. The World that Underlies the Senses
The range of these sources of activity thus includes a number of these sources that is equal to the number of sense organs. And one can say that the outermost limits of this range may be assumed to be the “I” on the one hand and the “sense of touch” on the other, although the sense of touch, like the “I”, may not be counted as part of the actual sensory life. What once belonged to the “I” has detached itself from sensory perception, and so, because it is a completely inner experience, can no longer be counted among the latter. But it belongs to the essential nature of every sensory perception that it can become an “I” experience. To do so, every sense organ must be predisposed from the supersensible world to provide something that can become an “I” experience. And the sense of touch, in a sense, provides experiences of the opposite kind. What it reveals about an object presents itself as something that lies entirely outside of the human being. Thus, the human being as a whole must be constructed out of the supersensible world in such a way that, on the basis of tactile experiences, he confronts a world outside of himself.