Letter 56 — On Quiet and Study (§3)

“So you say: “What iron nerves or deadened ears, you must have, if your mind can hold out amid so many noises, so various and so discordant, when our friend Chrysippus is brought to his death by the continual good-morrows that greet him!” But I assure you that this racket means no more to me than the sound of waves or falling water; although you will remind me that a certain tribe once moved their city merely because they could not endure the din of a Nile cataract.”