Section — McHugh–Callan, Moral Theology
Introduction
22.
(Summa Theologica, I-II, qq. 6-17.)
Human acts are a means to man’s Last End, inasmuch as they are meritorious—i.e., labors that deserve a recompense (I Cor., iii. 8), struggles that deserve a crown (II Tim., ii. 5). But works are not meritorious unless they are one’s own (human) and good (moral); and, since the reward is supernatural, they must also be the fruit of grace. Hence, we shall speak of acts in the following order: (a) acts as human and free (Art. 2); (b) acts as morally good (Art. 3); (c) acts as supernaturally meritorious (Art. 4).