A good metaphor is something even the police should keep an eye on.

If all else fails, the character of a man can be recognized by nothing so surely as by a jest which he takes badly.

With a pen in my hand I have successfully stormed bulwarks from which others armed with sword and excommunication have been repulsed.

Man is a masterpiece of creation, if only because no amount of determinism can prevent him from believing that he acts as a free being.

A schoolteacher or professor cannot educate individuals, he educates only species.

Perhaps in time the so-called Dark Ages will be thought of as including our own.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.