Virtue is about certain things in two ways. In the first place a virtue is about its object.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic 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

“Accordingly the practical or active faculty which is contrasted with the speculative faculty, is concerned with exterior work, to which the speculative habit is not ordained. Yet it is ordained to the interior act of the intellect which is to consider the truth. And in this way it is an operative habit. Reply Obj. 2: Virtue is about certain things in two ways. In the first place a virtue is about its object. And thus these speculative virtues are not about those things whereby man is made happy; except perhaps, in so far as the word "whereby" indicates the efficient cause or object of complete happiness, i.e.” source