Reply Obj. 2: Just as it is a very good thing for a man to make good use of power in ruling many, so is it a very bad thing if he makes a bad use of it. And so it is that power is towards good and evil.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic evil power
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

“1: God's power is His goodness: hence He cannot use His power otherwise than well. But it is not so with men. Consequently it is not enough for man's happiness, that he become like God in power, unless he become like Him in goodness also.
Reply Obj. 2: Just as it is a very good thing for a man to make good use of power in ruling many, so is it a very bad thing if he makes a bad use of it. And so it is that power is towards good and evil. Reply Obj. 3: Servitude is a hindrance to the good use of power: therefore is it that men naturally shun it; not because man's supreme good consists in power. ________________________
FIFTH ARTICLE [I-II, Q. 2, Art.” source