Natural concupiscence cannot be actually infinite: because it is of that which nature requires; and nature ever tends to something finite and fixed. Hence man never desires infinite meat, or infinite drink.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic drinking desire
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17897/pg17897-images.html

Context

“On the contrary, The Philosopher says (Polit. i, 3) that "since concupiscence is infinite, men desire an infinite number of things."
I answer that, As stated above (A. 3) , concupiscence is twofold; one is natural, the other is not natural. Natural concupiscence cannot be actually infinite: because it is of that which nature requires; and nature ever tends to something finite and fixed. Hence man never desires infinite meat, or infinite drink. But just as in nature there is potential successive infinity, so can this kind of concupiscence be infinite successively; so that, for instance, after getting food, a man may desire food yet again; and so of anything else that nature requires: because these bodily goods, when obtained, do not last for ever, but fail.” source