Rudolf Steiner: "Still less do we perceive the inner processes of the sense of touch, which, in fact, we project entirely to the outside. We can sense whether bodies are hard or soft, rough or smooth, made of silk or wool. We project the experiences of touch entirely into external space. What we have in the sense of touch is actually an inner experience, but what takes place within remains completely in the subconscious. Only a shadow of it is present in the properties of the sense of touch ascribed to the objects. The organ of the sense of touch, however, causes us to feel whether the things are silken or woolen, hard or soft, rough or smooth. This, too, sends it effects within. It radiates into the soul, but the human being is not aware of the connection of his soul experiences with what the sense of touch attains in touching, because the two aspects are greatly differentiated — namely, what streams to the soul within and what is experienced on the surface outside. What does, however, stream into the soul is nothing else but being permeated with the feeling of God. Without the sense of touch, man would have no feeling for God. What is felt by the sense of touch as roughness and smoothness, hardness and softness, is the element streaming outward. What is turned back as a soul phenomenon is the condition of permeation with universal cosmic substance, with being as such. It is precisely through the sense of touch that we ascertain the existence of the outer world. When we see something, we do not immediately believe that it is indeed present in space; we are convinced of its spatial existence when the sense of touch can grasp it. What permeates all things and penetrates into us also, what holds and bears all of you — this all-pervading substance of God — enters consciousness and is the inwardly reflected experience of the sense of touch."
"Touching is separation and connection both at once." — Novalis