The worst thing about slavery is that the slaves eventually get to like it.

As the pleasures of the body are the ones which we most often meet with, and as all men are capable of these, these have usurped the family title; and some men think these are the only pleasures that exist, because they are the only ones which they know.

Authority is no source for Truth.

Man perfected by society is the best of all animals; he is the most terrible of all when he lives without law, and without justice.

Good habits formed at youth make all the difference.

Temperance is a mean with regard to pleasures.

All teaching and all intellectual learning come about from already existing knowledge.