Did science promise happiness? I do not believe it. It promised truth, and the question is to know if we will ever make happiness with truth.

If something's just, I'll let myself be hacked to bits for it.

It was always the same; other people gave up loving before she did. They got spoilt, or else they went away; in any case, they were partly to blame. Why did it happen so? She herself never changed; when she loved anyone, it was for life. She could not understand desertion; it was something so huge, so monstrous that the notion of it made her little heart break.

Truth is on the march, and nothing will stop it.

The fate of animals is of greater importance to me than the fear of appearing ridiculous; it is indissolubly connected with the fate of men.

Art for me...is a negation of society, an affirmation of the individual, outside of all the rules and all the demands of society.

She was cold by nature, self-love predominating over passion; rather than being virtuous, she preferred to have her pleasures all to herself.