Authority is by nothing so much strengthened and confirmed as by custom; for no man easily distrusts the things which he and all men have been always bred up to.
Man's wisdom is his best friend; folly his worst enemy.
The best rules to form a young man, are, to talk little, to hear much, to reflect alone upon what has passed in company, to distrust one's own opinions, and value others that deserve it.
The only way for a rich man to be healthy is by exercise and abstinence, to live as if he were poor.
There cannot live a more unhappy creature than an ill-natured old man, who is neither capable of receiving pleasures, nor sensible of conferring them on others.