For a small good or evil is reckoned as though it were nothing: and consequently every movement of the appetite in future good or evil is called hope or fear, which regard good and evil as arduous.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic evil fear
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17897/pg17897-images.html

Context

“3: The passion which is directly contrary to concupiscence has no name, and stands in relation to evil, as concupiscence in regard to good. But since, like fear, it regards the absent evil; sometimes it goes by the name of fear, just as hope is sometimes called covetousness. For a small good or evil is reckoned as though it were nothing: and consequently every movement of the appetite in future good or evil is called hope or fear, which regard good and evil as arduous. ________________________
THIRD ARTICLE [I-II, Q. 30, Art. 3]
Whether Some Concupiscences Are Natural, and Some Not Natural?
Objection 1: It would seem that concupiscences are not divided into those which are natural and those which are not.” source