Where does the analogy between art and moral virtue break down?

Aristotle returns to his analogy between the arts and the moral virtues—this time to show why it is imperfect. In the arts, he says, the final product is a final product in and of itself. The virtues, however, are not like this, since they involve not only performing virtuous acts, but performing virtuous acts as a virtuous person would. This involves not only knowledge, but also choice and a developed character. Neither of these latter two are required in the case of the artwork.