Whoever serves his country well has no need of ancestors.
Those who believe absurdities will commit atrocities.
It requires ages to destroy a popular opinion.
When he who hears does not know what he who speaks means, and when he who speaks does not know what he himself means, that is philosophy.
The more a man knows, the less he talks.
No one is ignorant that our character and turn of mind are intimately connected with the water-closet.