Whether hope is a virtue?

Objections

Objection 1 : It would seem that hope is not a virtue. For "no man makes ill use of a virtue," as Augustine states (De Lib. Arb. ii, 18). But one may make ill use of hope, since the passion of hope, like the other passions, is subject to a mean and extremes. Therefore hope is not a virtue.
Objection 2 : Further, no virtue results from merits, since "God works virtue in us without us," as Augustine states (De Grat. et Lib. Arb. xvii). But hope is caused by grace and merits, according to the Master (Sent. iii, D, 26). Therefore hope is not a virtue.
Objection 3 : Further, "virtue is the disposition of a perfect thing" (Phys. vii, text. 17,18). But hope is the disposition of an imperfect thing, of one, namely, that lacks what it hopes to have. Therefore hope is not a virtue.