"The best way to cheer yourself up is to try to cheer somebody else up."

"I am a democrat only on principle, not by instinct, nobody is that. Doubtless some people say they are, but this world is grievously given to lying."

"Loyalty to petrified opinion never yet broke a chain or freed a human soul."

"Never try to teach a pig to sing. You waste your time, and you annoy the pig."

"The ass is the only animal that can't be improved by cross-breeding."