Opinions founded on prejudice are always sustained with the greatest of violence.

There is nothing respecting which a man may be so long unconscious as of the extent and strength of his prejudices.

The disease and its medicine are like two factions in a besieged town; they tear one another to pieces, but both unite against their common enemy, Nature.

Simplicity of manner is the last attainment. Men are very long afraid of being natural, from the dread of being taken for ordinary.

An obligation is something which constrains or induces us to act.

Derision is never so agonizing as when it pounces on the wanderings of misguided sensibility.

Nothing is so firmly than that which is least known.