...our mind is not conformed to the blessed Trinity except through the uprightness of our free choice, and this occurs only through the strength of virtue, the splendor of truth, and the fervor of love. For the strength of virtue cleanses, strengthens, and elevates the soul; the splendor of truth enlightens and reforms it, conforming it to God; and the fervor of love perfects and vivifies it and unites it with God. When all this is accomplished, a person is made pleasing and acceptable to God.
[Bonaventure, Breviloquium (5.1.6), Monti, tr., Franciscan Institute Publications (St. Bonaventure, NY: 2005) p. 172.]