As natural knowledge is always true, so is natural love well regulated
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic love self-knowledge
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17611/pg17611-images.html

Context

“So there is nothing unfitting in an angel being moved to act in so far as such natural inclination is implanted in him by the Author of his nature. Yet he is not so moved to act that he does not act himself, because he has free-will. Reply Obj. 3: As natural knowledge is always true, so is natural love well regulated; because natural love is nothing else than the inclination implanted in nature by its Author. To say that a natural inclination is not well regulated, is to derogate from the Author of nature. Yet the rectitude of natural love is different from the rectitude of charity and virtue:” source