A clever child brought up with a foolish one can itself become foolish. Man is so perfectible and corruptible he can become a fool through good sense.

Great men too make mistakes, and many among them do it so often that one is almost tempted to call them little men.

All mathematical laws which we find in Nature are always suspect to me, in spite of their beauty. They give me no pleasure. They are merely auxiliaries. At close range it is all not true.

Nothing can contribute more to peace of soul than the lack of any opinion whatever.

Barbaric accuracy - whimpering humility.

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

He was then in his fifty-fourth year, when even in the case of poets reason and passion begin to discuss a peace treaty and usually conclude it not very long afterwards.