"The singular feature of the mental structure of the ape is the faculty of imitation."

"The ‛Imp of the Perverse’ is a radical, a primitive impulse—elementary, and altogether indissoluble."

"I remained too much inside my head and ended up losing my mind."

"I have no faith in human perfectibility. I think that human integrity has been ruined by the fall, and that I am a member of the ruined species."

"The world is a theatre, and we are merely players."