Whether virtue is in us by nature?

Objections

Objection 1 : It would seem that virtue is in us by nature. For Damascene says (De Fide Orth. iii, 14): "Virtues are natural to us and are equally in all of us." And Antony says in his sermon to the monks: "If the will contradicts nature it is perverse, if it follow nature it is virtuous." Moreover, a gloss on Mt. 4:23, "Jesus went about," etc., says: "He taught them natural virtues, i.e. chastity, justice, humility, which man possesses naturally."
Objection 2 : Further, the virtuous good consists in accord with reason, as was clearly shown above (Question [55], Article [4], ad 2). But that which accords with reason is natural to man; since reason is part of man's nature. Therefore virtue is in man by nature.
Objection 3 : Further, that which is in us from birth is said to be natural to us. Now virtues are in some from birth: for it is written (Job 31:18): "From my infancy mercy grew up with me; and it came out with me from my mother's womb." Therefore virtue is in man by nature.