He who is in love with himself has at least this advantage - he won't encounter many rivals.

The great trick of regarding small departures from the truth as the truth itself - on which is founded the entire integral calculus - is also the basis of our witty speculations, where the whole thing would often collapse if we considered the departures with philosophical rigour.

I forget most of what I read, just as I do most of what I have eaten, but I know that both contribute no less to the conservation of my mind and my body on that account.

You believe I run after the strange because I do not know the beautiful; no, it is because you do not know the beautiful that I seek the strange.

A man of spirit must not think of the word difficulty as so much as existing. Away with it!

Much can be inferred about a man from his mistress: in her one beholds his weaknesses and his dreams.

Ambition and suspicion always go together.