“I do not know a better cure for mental illness than a book.”

“Love is mental illness going in and mental illness coming out. In between, you do a lot of laundry.”

“In the twentieth century nothing can better cure the anthropocentrism that is the author of all our ills than to cast ourselves into the physics of the infinitely large (or the infinitely small).”

“I think that we're all mentally ill. Those of us outside the asylums only hide it a little better - and maybe not all that much better after all.”

“Stress is nothing more than a socially acceptable form of mental illness.”

“A doctor is advertised by the bodies he cures. My business is advertised by the minds I stimulate. And let me tell you that the book business is different from other trades. People don't know they want books. I can see just by looking at you that your mind is ill for lack of books but you are blissfully unaware of it!”