Everything passes, only truth remains.

I am a sick man...I am a spiteful man. An unattractive man. I think that my liver hurts.

If he has a conscience he will suffer for his mistake. That will be his punishment-as well as the prison.

I've always considered myself smarter than everyone around me, and sometimes, believe me, I've been ashamed of it. At the least, all my life I've looked away and never could look people straight in the eye.

If God does not exist, everything is permitted.

Man is a mystery. It needs to be unravelled, and if you spend your whole life unravelling it, don't say that you've wasted time. I am studying that mystery because I want to be a human being.

For the secret of man's being is not only to live but to have something to live for. Without a stable conception of the object of life, man would not consent to go on living, and would rather destroy himself than remain on earth, though he had bread in abundance.