The true science and study of man is man.

The advice of friends must be received with a judicious reserve; we must not give ourselves up to it and follow it blindly, whether right or wrong.

The shortest follies are the best. [Fr., Les plus courtes folies sont les meilleures.]

He who receives a benefit should never forget it; he who bestow should never remember it.

Pleasure and pain, though directly opposite are contrived to be constant companions.

The most excellent and divine counsel, the best and most profitable advertisement of all others, but the least practiced, is to study and learn how to know ourselves. This is the foundation of wisdom and the highway to whatever is good. God, Nature, the wise, the world, preach man, exhort him both by word and deed to the study of himself.