I do not believe that sheer suffering teaches. If suffering alone taught, all the world would be wise, since everyone suffers. To suffering must be added mourning, understanding, patience, love, openness, and the willingness to remain vulnerable.
― Anne Morrow Lindbergh, Gift from the Sea
Two perspectives :
pathei mathos
We come to wisdom only with suffering, because we do not wish to be wise, and suffer as bitter experience overcomes our resistance.
http://rickmarshall.blogspot.com/2007/11/pathei-mathos.html