Question 63 — Of the Cause of Virtues

We must now consider the cause of virtues; and under this head there are four points of inquiry:

(1) Whether virtue is in us by nature?

• (2) Whether any virtue is caused in us by habituation?
• (3) Whether any moral virtues are in us by infusion?
• (4) Whether virtue acquired by habituation, is of the same species as infused virtue?