The world has not yet learned the riches of frugality.

Let the punishment match the offense.

Death approaches, which is always impending like the stone over Tantalus: then comes superstition with which he who is imbued can never have peace of mind.

Men resemble the gods in nothing so much as in doing good to their fellow creatures.

Philosophy is true mother of the arts [of science].

Nothing is so great an adversary to those who make it their business to please as expectation.

If you possess a library and a garden, you have everything you need. (translation from the French) Si vous possedez une bibliotheque et un jardin, vous avez tout ce qu'il vous faut.