It is up to us to cultivate our garden.

Such then is the human condition, that to wish greatness for one's country is to wish harm to one's neighbors.

The sovereign is called a tyrant who knows no laws but his caprice.

It is the characteristic of the most stringent censorships that they give credibility to the opinions they attack.

Woe to the makers of literal translations, who by rendering every word weaken the meaning! It is indeed by so doing that we can say the letter kills and the spirit gives life.

We admit, in geometry, not only infinite magnitudes, that is to say, magnitudes greater than any assignable magnitude, but infinite magnitudes infinitely greater, the one than the other. This astonishes our dimension of brains, which is only about six inches long, five broad, and six in depth, in the largest heads.

The first step, my son, which one makes in the world, is the one on which depends the rest of our days.