Further, virtue consists not only in doing good but also in avoiding evil.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic evil virtue
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

“Further, love is not the only act of charity, but also joy, peace and beneficence. But precepts should be given about the acts of the virtues. Therefore two precepts of charity do not suffice. Obj. 3: Further, virtue consists not only in doing good but also in avoiding evil. Now we are led by the positive precepts to do good, and by the negative precepts to avoid evil. Therefore there ought to have been not only positive, but also negative precepts about charity; and so two precepts of charity are not sufficient.” source