Aristotle, De anima, II, 7 (418b 4; 419a 8).
St. Augustine, Epist. CXLVII, ad Paulinam, 8 (PL 33:605).
Hugh of St. Victor, De verbo incarnato, princ. (PL 177:295); cf. Summa sententiarum, I, 1 (PL 176:43).
Pseudo-Dionysius, De divinis nominibus, VII (PG 3:874).
St. Isidore of Seville, Sententiae, III, 13 (PL 83:687).
Aristotle, Ethica Nicomachea, VI, 3 (1139b 14); 6 (1140b 31).
Pseudo-Dionysius, De divinis nominibus, VII (PG 3:874).
Aristotle, De anima, II, 7 (418a 29; 419a 8).