Whether a human action is right or sinful, in so far as it is good or evil?

❌ Objection 1 : It seems that a human action is not right or sinful, in so far as it is good or evil. For "monsters are the sins of nature" (Phys. ii, 8). But monsters are not actions, but things engendered outside the order of nature. Now things that are produced according to art and reason imitate those that are produced according to nature (Phys. ii, 8). Therefore an action is not sinful by reason of its being inordinate and evil.

❌ Objection 2 : Further, sin, as stated in Phys. ii, 8 occurs in nature and art, when the end intended by nature or art is not attained. But the goodness or malice of a human action depends, before all, on the intention of the end, and on its achievement. Therefore it seems that the malice of an action does not make it sinful.

❌ Objection 3 : Further, if the malice of an action makes it sinful, it follows that wherever there is evil, there is sin. But this is false: since punishment is not a sin, although it is an evil. Therefore an action is not sinful by reason of its being evil.