Letters 21.11

In speaking with you, however, I refer to those desires which refuse alleviation, which must be bribed to cease. For in regard to the exceptional desires, which may be postponed, which may be chastened and checked, I have this one thought to share with you: a pleasure of that sort is according to our nature, but it is not according to our needs; one owes nothing to it; whatever is expended upon it is a free gift. The belly will not listen to advice; it makes demands, it importunes. And yet it is not a troublesome creditor; you can send it away at small cost, provided only that you give it what you owe, not merely all you are able to give. Farewell.

Seneca, Letters to Lucilius 21.11, translated by Richard Mott Gummere