"Experience is a good school, but the fees are high."

"Be entirely tolerant or not at all; follow the good path or the evil one. To stand at the crossroads requires more strength than you possess."

"Where they have burned books, they will end in burning human beings. (Dort, wo man B??cher verbrennt, verbrennt man am Ende auch Menschen)"

"Dieu me pardonnera. C'est son metier. (God will forgive me. It's his job.)"

"The Romans would never have found time to conquer the world if they had been obliged first to learn Latin."

"He only profits from praise who values criticism."

"Every man serves a useful purpose: A miser, for example, makes a wonderful ancestor."

"'Pathetic,' he said. 'That's what it is. Pathetic.' (crosses stream) 'As I thought,' he said, 'no better from this side.'"

"If you are not a psychiatrist, stay away from idiots. They are too stupid to pay a layman for his company."

"If they give you ruled paper, write the other way."

"Who is rich? He who is content. Who is that? Nobody."

"Viewed from the summit of reason, all life looks like a malignant disease and the world like a madhouse."