Since, therefore, experience increases a man's power of action, therefore, as it increases hope, so does it diminish fear.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic action 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

“1: The object of hope is a good that is possible to obtain. Consequently whatever increases a man's power, is of a nature to increase hope, and, for the same reason, to diminish fear, since fear is about an evil which cannot be easily repelled. Since, therefore, experience increases a man's power of action, therefore, as it increases hope, so does it diminish fear. Reply Obj. 2: Those who are quick-tempered do not hide their anger; wherefore the harm they do others is not so sudden, as not to be foreseen. On the other hand, those who are gentle or cunning hide their anger; wherefore the harm which may be impending from them, cannot be foreseen, but takes one by surprise.” source