[593] Quaestiones disputatae: De Veritate, x. 6. Citing Rom. i. 20.
[594] Prooemium to Qu. xiv. Pars prima.
[595] Qu. xiv. Art. 2—a point which Thomas reasons out in interesting scholastic Aristotelian fashion, but in language too technical to translate.
[596] Pars prima, Qu. xiv. Art. 11.
[597] Pars prima, Qu. xv. Art. 1-3.
[598] Pars prima, Qu. xxvi. Art. 2.
[599] Pars prima, Qu. xliv. Art. 3.
[600] Pars prima, Qu. xlv. Art. 1.
[601] Summa theol. pars prima, Qu. l. As heretofore, I follow the exposition of the Summa theologiae. But Thomas began a large and almost historical treatment of angels in his unfinished Tract. de substantiis separatis, seu de Angelorum natura (unfinished, in Opuscula theol.). He has another and important tractatus, De cognitione Angelorum, Quaestiones disput. de veritate, viii.
[602] Pars prima, Qu. l. Art. 1. Thomas goes on to contradict Aristotle, in holding quod nullum ens esset nisi corpus.