Madness is to think of too many things in succession too fast, or of one thing too exclusively.

Christianity is the most ridiculous, the most absurd and bloody religion that has ever infected the world.

I hold firmly to my original views. After all I am a philosopher.

It is not sufficient to see and to know the beauty of a work. We must feel and be affected by it.

The man who, in a fit of melancholy, kills himself today, would have wished to live had he waited a week.

What is tolerance? It is the consequence of humanity.

All sects are different, because they come from men; morality is everywhere the same, because it comes from God.