What is really beautiful must always be true.

The first virtue of a young man today - that is, for the next fifty years perhaps, as long as we live in fear, and religion has regained its powers - is to be incapable of enthusiasm and not to have much in the way of brains.

The great majority of men, especially in France, both desire and possess a fashionable woman, much in the way one might own a fine horse - as a luxury befitting a young man.

Never had he found himself so close to those terrible weapons of feminine artillery.

Indeed, man has two different beings inside him. What devil thought of that malicious touch?

Every true passion thinks only of itself.

Mathematics allows for no hypocrisy and no vagueness.