For even the sower, after he has scattered his seed, unless he expects the harvest, will never reap. For who would choose to fatigue himself in vain, if he was not to gain any good from his labor? So then he also who sows words, and tears, and confession, unless he does this with a good hope, will not be able to desist from sinning, being still held down by the evil of despair; but just as that farmer who despairs of any crop of fruit will not in the future hinder any of those things which damage the seeds, so also he who sows his confession with tears, but does not expect any advantage for this, will not be able to overthrow those things which spoil repentance.

Book 1- Part 18: Believe Repentance is Beneficial (Pg. 110)