Wherefore all the moral virtues must needs be infused together with charity, since it is through them that man performs each different kind of good work.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic virtue charity
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

“thus animals are provided with organs whereby to perform the actions that their souls empower them to do. Now it is evident that charity, inasmuch as it directs man to his last end, is the principle of all the good works that are referable to his last end. Wherefore all the moral virtues must needs be infused together with charity, since it is through them that man performs each different kind of good work. It is therefore clear that the infused moral virtues are connected, not only through prudence, but also on account of charity: and, again, that whoever loses charity through mortal sin, forfeits all the infused moral virtues.” source