Letters 81.9

There is a marvellously accurate phraseology applied to certain subjects, a long-established terminology which indicates certain acts by means of symbols that are most efficient and that serve to outline men’s duties. We are, as you know, wont to speak thus: “A. has made a return for the favour bestowed by B.” Making a return means handing over of your own accord that which you owe. We do not say, “He has paid back the favour”; for “pay back” is used of a man upon whom a demand for payment is made, of those who pay against their will, of those who pay under any circumstances whatsoever, and of those who pay through a third party. We do not say, “He has ‘restored’ the benefit,” or ‘settled’ it; we have never been satisfied with a word which applies properly to a debt of money.

Seneca, Letters to Lucilius 81.9, translated by Richard Mott Gummere