It is not enough to be exceptionally mad, licentious and fanatical in order to win a great reputation; it is still necessary to arrive on the scene at the right time.

It would be very singular that all nature, all the planets, should obey eternal laws, and that there should be a little animal five feet high, who, in contempt of these laws, could act as he pleased, solely according to his caprice.

Judge a man by his questions rather than his answers.

What is called happiness is an abstract idea, composed of various ideas of pleasure; for he who has but a moment of pleasure is not a happy man, in like manner that a moment of grief constitutes not a miserable one.

Where some states possess an army, the Prussian Army possesses a state.

Prejudice is opinion without judgement.

Prejudices are what fools use for reason.