wherefore love is reckoned a virtue, rather than joy, which is an effect of love.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic virtue joy
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“Moreover there is no comparison with charity since it is not founded principally on the virtue of a man, but on the goodness of God. Reply Obj. 2: It belongs to the same virtue to love a man and to rejoice about him, since joy results from love, as stated above (I-II, Q. 25, A. 2) in the treatise on the passions: wherefore love is reckoned a virtue, rather than joy, which is an effect of love. And when virtue is described as being something ultimate, we mean that it is last, not in the order of effect, but in the order of excess, just as one hundred pounds exceed sixty. Reply Obj. 3: Every accident is inferior to substance if we consider its being, since substance has being in itself, while an accident has its being in another:” source