Letters 56.14

Select anyone you please from among your favourites of Fortune, trailing their many responsibilities, carrying their many burdens, and you will behold a picture of Vergil’s hero, “fearing both for his child and for the load he bears.”

You may therefore be sure that you are at peace with yourself, when no noise reaches you, when no word shakes you out of yourself, whether it be of flattery or of threat, or merely an empty sound buzzing about you with unmeaning din.

Seneca, Letters to Lucilius 56.14, translated by Richard Mott Gummere