It is not more surprising to be born twice than once; everything in nature is resurrection.

All men are by nature free; you have therefore an undoubted liberty to depart whenever you please, but will have many and great difficulties to encounter in passing the frontiers.

He who seeks truth should be of no country.

All is for the best in the best of all possible worlds.

As you know, the Inquisition is an admirable and wholly Christian invention to make the pope and the monks more powerful and turn a whole kingdom into hypocrites.

If you are attacked as regards your style, never reply; it is for your work alone to make answer.

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