Harry Emerson Fosdick said this quote
“ The most extraordinary thing about the oyster is this. Irritation gets into his shell. He does not like them. But when he cannot get rid of them he uses the irritation to do the lovelist thing an oyster ever has the chance to do. If there are irritations in our lives today, there is only one prescription: make a pearl. It may have to be a pearl of patience, but…make a pearl.-In the Treasure Chest, ed. Charles L. Wallis ”