A man does not enjoy that which he desires for the sake of something else.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic 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

“Therefore a man enjoys his enjoyment. But the last end of man is not enjoyment, but the uncreated good alone, which is God. Therefore enjoyment is not only of the last end. On the contrary, Augustine says (De Trin. x, 11) : "A man does not enjoy that which he desires for the sake of something else." But the last end alone is that which man does not desire for the sake of something else. Therefore enjoyment is of the last end alone. I answer that, As stated above (A. 1) the notion of fruit implies two things:” source