But an angel is a kind of nature. Therefore there is an active and a passive intellect in an angel.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic intellect angel
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17611/pg17611-images.html

Context

“Objection 1: It would seem that there is both an active and a passive intellect in an angel. The Philosopher says (De Anima iii, text. 17) that, "in the soul, just as in every nature, there is something whereby it can become all things, and there is something whereby it can make all things." But an angel is a kind of nature. Therefore there is an active and a passive intellect in an angel. Obj. 2: Further, the proper function of the passive intellect is to receive; whereas to enlighten is the proper function of the active intellect, as is made clear in De Anima iii, text. 2, 3, 18. But an angel receives enlightenment from a higher angel, and enlightens a lower one.” source