For the more perfect moral virtue is, the more does it overcome the passions.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic passion virtue
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

“Hence the comparison does not hold for all cases. ________________________ FIFTH ARTICLE [I-II, Q. 59, Art. 5] Whether There Can Be Moral Virtue Without Passion? Objection 1: It would seem that moral virtue can be without passion. For the more perfect moral virtue is, the more does it overcome the passions. Therefore at its highest point of perfection it is altogether without passion. Obj. 2: Further, then is a thing perfect, when it is removed from its contrary and from whatever inclines to its contrary.” source