Excerpt About Thinking
Doubt Defends Against the Emptiness of SpaceThinking fills the mind, and in this way defends against the emptiness of space. Thinking is in fact the inner experience that corresponds to the ring of tension around the head. Doubt is an especially efficient form of this defense, because doubt involves a tightening of the forehead and the eyes, and the centers of perception in the ocular region. This not only prevents the experience of space, it also invalidates past experiences of it.