"Everything straight lies," . . .. "All truth is crooked; time itself is a circle."

Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed.

Nothing is easier than self-deceit. For what each man wishes, that he also believes to be true.

And we should consider every day lost on which we have not danced at least once. And we should call every truth false which was not accompanied by at least one laugh.

You could not step twice into the same river; for other waters are ever flowing on to you.

I am a kind of paranoiac in reverse. I suspect people of plotting to make me happy.

Reason has always existed, but not always in a reasonable form.

The existence and non-existence of states of affairs is reality.

The grandeur of a philosophy does not certify its truth.

Men never do evil so completely and cheerfully as when they do it from a religious conviction.