Nothing is more dangerous than an idea when it is the only one you have.

Every idea I get I have to deny, that's my way of testing it.

The most difficult thing in the world is to say thinkingly what everybody says without thinking.

It is the human condition to question one god after another, one appearance after another, or better, one apparition after another, always pursuing the truth of the imagination, which is not the same as the truth of appearance.

If religion is only human, and its form is man's form, it follows that everything in religion is true.

Profound sadness is always the result of an unhealthy condition of the body. ... We [should] say, 'I am sad; everything looks black to me; but external events are in no way responsible. It's my body that insists on reasoning. These are the opinions of my stomach.'

What is a thousand years? Time is short for one who thinks, endless for one who yearns.