ARTICLE III

Aristotle, Ethica Nicomachea, II, 1 (1103b 6).

St. Augustine, Confessiones, V, 4 (PL 32:708).

St. Augustine, De genesi ad litteram, II, 8 (PL 34:270).

In q. 20, a. 1.

Ibid.

Avicenna and his followers. Cf. Avicenna, Metaph., IX, 7 (107r).

This opinion was held by St. Thomas himself (S.T., I, 89, 5); Peter Lombard, Sentent., III, 31, 2 (QR II:693); William of Auxerre and St. Bonaventure, cf. the latter's In Sent., III, d. 31, a. 2, q. 3 (QR III:686-87).

This was held by Gundissalinus, De anima, X (Muckle, Medieval Studies, II [1940], 97, 12); St. Albert the Great, In Sent., III, d. 31, a. 10 (BO 28:590).

Cf. S.T., I-II, 61, 5, for the three classes of virtues: political, purifying, and those of the purified soul.

In q. 8, a. 5.

In q. 20, a. 2.