Politics is a science. You can demonstrate that you are right and that others are wrong.

Man is nothing else but what he purposes, he exists only in so far as he realizes himself, he is therefore nothing else but the sum of his actions, nothing else but what his life is.

My thought is me: that is why I cannot stop thinking. I exist because I think I cannot keep from thinking.

When I can't see myself in the mirror, I can't even feel myself, and I begin to wonder if I exist at all.

The more absurd life is, the more insupportable death is.

Absurd, irreducible; nothing — not even a profound and secret delirium of nature — could explain it. Obviously I did not know everything, I had not seen the seeds sprout, or the tree grow. But faced with this great wrinkled paw, neither ignorance nor knowledge was important: the world of explanations and reasons is not the world of existence. A circle is not absurd, it is clearly explained by the rotation of a straight segment around one of its extremities. But neither does a circle exist. This root, on the other hand, existed in such a way that I could not explain it.

If you begin by saying, 'Thou shalt not lie,' there is no longer any possibility of political action.