"It is only the man whose intellect is clouded by his sexual impulses that could give the name of the fair sex to that undersized, narrow-shouldered, broad-hipped, and short-legged race."

"The greatest wisdom is to make the present the object of one's consciousness, so that one is always in the present."

"Man is a metaphysical animal."

"The world is a prison in which solitary confinement is preferable."

"The greatest curse of man is that he cannot get rid of himself."