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.

Those who have nothing else to recommend them to the respect of others but only their blood, cry it up at a great rate, and have their mouth perpetually full of it. They swell and vapor, and you are sure to hear of their families and relations every third word.

The true science and study of mankind is man.

Gratitude is a duty none can be excused from, because it is always at our own disposal.

The most excellent and divine counsel, the best and most profitable advertisement of all others, but the least practised, 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.

He that boasts of his ancestors confesses that he has no virtue of his own. No person ever lived for our honor; nor ought that to be reputed ours, which was long before we had a being; for what advantage can it be to a blind man to know that his parents had good eyes? Does he see one whit the better?

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