All credibility, all good conscience, all evidence of truth come only from the senses.

A high civilization is a pyramid: it can stand only on a broad base; its primary prerequisite is a strong and soundly consolidated mediocrity.

Probability but no truth, facility but no freedom--it is owing to these two fruits that the tree of knowledge cannot be confused with the tree of life.

Where neither love nor hatred is in the game, a woman's game is mediocre.

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

Our knowledge will take its revenge on us, just as ignorance exacted its revenge during the Middle Ages.

To be moral, correct, and virtuous is to be obedient to an old established law and custom.