To a man whose mind is free there is something even more intolerable in the sufferings of animals than in the sufferings of man. For with the latter it is at least admitted that suffering is evil and that the man who causes it is a criminal. But thousands of animals are uselessly butchered every day without a shadow of remorse. If any man were to refer to it, he would be thought ridiculous. And that is the unpardonable crime.

All these young millionaires were anarchists, of course: when a man possesses everything it is the supreme luxury for him to deny society: for in that way he can evade his responsibilities

You desire a popular art? Begin by having a "people" whose minds are liberated, a people not crushed by misery and ceaseless toil, not brutalized by every superstition and every fanaticism, a people of itself, and victor in the fight that is being waged today.

Discussion is impossible with someone who claims not to seek the truth, but already to possess it.

The greatest book is not the one whose message engraves itself on the brain, as a telegraphic message engraves itself on the ticker-tape, but the one whose vital impact opens up other viewpoints, and from writer to reader spreads the fire that is fed by the various essences, until it becomes a vast conflagration leaping from forest to forest.

I find war detestable but those who praise it without participating in it even more so.

Passion is like genius: a miracle.