Consequently if the difficult thing which is the object of pride, were merely some sensible object, whereto the sensitive appetite might tend, pride would have to be in the irascible which is part of the sensitive appetite.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic pride appetite
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“It is thus that we attribute anger to God and the angels, not as a passion, but as denoting the sentence of justice pronouncing judgment. Nevertheless the irascible understood in this broad sense is not distinct from the concupiscible power, as stated above in the First Part (Q. 59, A. 4; I-II, Q. 82, A. 5, ad 1 and 2) .
Consequently if the difficult thing which is the object of pride, were merely some sensible object, whereto the sensitive appetite might tend, pride would have to be in the irascible which is part of the sensitive appetite. But since the difficult thing which pride has in view is common both to sensible and to spiritual things, we must needs say that the subject of pride is the irascible not only strictly so called, as a part of the sensitive appetite, but also in its wider acceptation, as applicable to the intellective appetite.” source