The art of acting consists in keeping people from coughing.

There is nothing wrong with retirement as long as one doesn't allow it to interfere with one's work.

Most people dislike vanity in others, whatever share they have of it themselves.

Nothing's so apt to undermine your confidence in a product as knowing that the commercial selling it has been approved by the company that makes it.

There was great difference in persons; and discretion did not always accompany years, nor was youth always without it.

There are three things extremely hard: steel, a diamond, and to know one's self.

I say it is impossible that so sensible a people [citizens of Paris], under such circumstances, should have lived so long by the smoky, unwholesome, and enormously expensive light of candles, if they had really known that they might have had as much pure light of the sun for nothing.