“I move, therefore I am.”

“By then running had entered the realm of the metaphysical. First there came the action of running, and accompanying it there was this entity known as me. I run; therefore I am.”

“Judging from the spiderwebs clinging to it, the emergency stairway was hardly ever used. To each web clung a small black spider, patiently waiting for its small prey to come along. Not that the spiders had any awareness of being "patient". A spider had no special skill other than building its web, and no lifestyle choice other than sitting still. It would stay in one place waiting for its prey until, in the natural course of things, it shriveled up and died. This was all genetically predetermined. The spider had no confusion, no despair, no regrets. No metaphysical doubt, no moral complications. Probably. Unlike me. I move,therefore I am.”

“At the same time that 'I' am the content of a relation, 'I' am also that which does the relating.”

“I am, indeed, pure Frog, but at the same time I am a thing that stands for a world of un-Frog.”

“All right, then, I thought: here I am in the bottom of a well.”

“I am here, alone, at the end of the world. I reach out and touch nothing.”.”