All men are of one species, and have one connatural mode of understanding
 Thomas Aquinas, Summa Theologica (1274). copy citation

add
Author Thomas Aquinas
Source Summa Theologica
Topic species
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

“As regards knowing God Himself, Whom all see in one way—that is, in His essence—there is no hierarchical distinction among the angels; but there is such a distinction as regards the types of created things, as above explained. Reply Obj. 3: All men are of one species, and have one connatural mode of understanding; which is not the case in the angels: and hence the same argument does not apply to both. _______________________ SECOND ARTICLE [I, Q. 108, Art. 2] Whether There Are Several Orders in One Hierarchy?” source