What is the truth, but a lie agreed upon.

It is my ambition to say in ten sentences what others say in a whole book.

Children from humble families must be taught how to command just as other children must be taught how to obey.

He who has attained intellectual emancipation to any extent cannot, for a long time, regard himself otherwise than as a wanderer on the face of the earth and not even as a traveller towards a final goal, for there is no such thing.

One begins to mistrust very clever people when they become embarrassed.

Aphorisms should be peaks - and those who are addressed, tall and lofty. The air thin and pure, danger near, and the spirit full of gay sarcasm: these go well together.

To be the equal of one's opponent-this is the first condition of an honourable duel.