Labor is the only prayer that Nature answers: It is the only prayer that deserves an answer—good, honest, noble work.

If there is a God who will damn his children forever, I would rather go to hell than to go to heaven and keep the society of such an infamous tyrant.

Intelligence, guided by kindness, is the highest wisdom. . . .

Diderot took the ground that, if orthodox religion be true Christ was guilty of suicide. Having the power to defend himself he should have used it.

Custom meets us at the cradle and leaves us only at the tomb.

It is labor that has made the world a fit habitation for the human race.

The first step is for man to cease to be the slave of man. The second, is to cease to be the slave of the monsters of his own creation, the ghosts and phantoms of the air.