Nothing is absolutely unjust. There is no real equity, no total grandeur, no pure vice, no absolute crime.

Man is a machine and in the whole universe there is but a single substance, matter, variously modified.

Let us then submit to an invincible ignorance on which our happiness depends.

Love conquers everything even karma.

Therefore, since we may say, after such long experience, that religion does not imply exact honesty, we are authorized by the same reasons to think that atheism does not exclude it.

Who lives as a citizen, may write as a philosopher - but write as a philosopher, it is to teach materialism!

The human body is a machine that winds up its own springs: it is a living image of the perpetual motion.