Piety, like nobility, has its aristocracy.

My poor head is in such a whirl, my mind is all in bits.

Wer fremde Sprachen nicht kennt, weiss nichts von seiner eigenen.He who is ignorant of foreign languages, knows not his own.

All men would be masters of others, and no man is lord of himself.

Art is long, life short, judgment difficult, opportunity transient. To act is easy, to think is hard; to act according to our thought is troublesome. Every beginning is cheerful: the threshold is the place of expectation.

Everyone only hears what he understands.

Humor is one of the elements of genius--admirable as an adjunct; but as soon as it becomes dominant, only a surrogate for genius.