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Virtues

After thus stating the principles of morality, in the Secunda Secundae, St. Thomas comes to a minute exposition of his ethics according to the scheme of the virtues. The conceptions of faith and love are of much significance in the complete system of St. Thomas. Man strives toward the highest good with the will or through love; but since the end must first be "apprehended in the intellect", knowledge of the end to be loved must precede love; "because the will can not strive after God in perfect love unless the intellect have true faith toward him."

Inasmuch as this truth that is to be known is practical, it first incites the will, which then brings the reason to "assent"; but since, furthermore, the good in question is transcendent and inaccessible to man by himself, it requires the infusion of a supernatural "capacity" or "disposition" to make man capable of faith as well as love.

Accordingly, the object of both faith and love is God, involving also the entire complex of truths and commandments that God reveals, insofar as they in fact relate to God and lead to him. Thus, faith becomes recognition of the teachings and precepts of the Scriptures and the Church ("the first subjection of man to God is by faith"). The object of faith is, by its nature, object of love; therefore, faith comes to completion only in love ("by love is the act of faith accomplished and formed").