‘We need to set our affections on some good man and keep him constantly before our eyes, so that we may live as if he were watching us and do everything as if he saw what we were doing.’ This, my dear Lucilius, is Epicurus’ advice, and in giving it he has given us a guardian and a moral tutor – and not without reason, either: misdeeds are greatly diminished if a witness is always standing near intending doers.
