Now displeasure causes sorrow in one who is susceptible to sorrow, as man is in this life
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic sorrow life
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/19950/pg19950-images.html

Context

“Internal penance is that whereby one grieves for a sin one has committed, and this penance should last until the end of life. Because man should always be displeased at having sinned, for if he were to be pleased thereat, he would for this very reason fall into sin and lose the fruit of pardon. Now displeasure causes sorrow in one who is susceptible to sorrow, as man is in this life; but after this life the saints are not susceptible to sorrow, wherefore they will be displeased at, without sorrowing for, their past sins, according to Isa. 65:16. "The former distresses are forgotten."” source