Whether shamefacedness is a virtue?

Objections

Objection 1 : It seems that shamefacedness is a virtue. For it is proper to a virtue "to observe the mean as fixed by reason": this is clear from the definition of virtue given in Ethic. ii, 6. Now shamefacedness observes the mean in this way, as the Philosopher observes (Ethic. ii, 7). Therefore shamefacedness is a virtue.
Objection 2 : Further, whatever is praiseworthy is either a virtue or something connected with virtue. Now shamefacedness is praiseworthy. But it is not part of a virtue. For it is not a part of prudence, since it is not in the reason but in the appetite; nor is it a part of justice. since shamefacedness implies a certain passion, whereas justice is not about the passions; nor again is it a part of fortitude, because it belongs to fortitude to be persistent and aggressive, while it belongs to shamefacedness to recoil from something; nor lastly is it a part of temperance, since the latter is about desires, whereas shamefacedness is a kind of fear according as the Philosopher states (Ethic. iv, 9) and Damascene (De Fide Orth. ii, 15). Hence it follows that shamefacedness is a virtue.
Objection 3 : Further, the honest and the virtuous are convertible according to Tully (De Offic. i, 27). Now shamefacedness is a part of honesty: for Ambrose says (De Offic. i, 43) that "shamefacedness is the companion and familiar of the restful mind, averse to wantonness, a stranger to any kind of excess, the friend of sobriety and the support of what is honest, a seeker after the beautiful." Therefore shamefacedness is a virtue.
Objection 4 : Further, every vice is opposed to a virtue. Now certain vices are opposed to shamefacedness, namely shamelessness and inordinate prudery. Therefore shamefacedness is a virtue.
Objection 5 : Further, "like acts beget like habits," according to Ethic. ii, 1. Now shamefacedness implies a praiseworthy act; wherefore from many such acts a habit results. But a habit of praiseworthy deeds is a virtue, according to the Philosopher (Ethic. i, 12). Therefore shamefacedness is a virtue.