There is an alchemy in sorrow. It can be transmuted into wisdom, which, if it does not bring joy, can yet bring happiness. Pearl S Buck
The secret source of humour is not joy, but sorrow. There is no humour in heaven. Phillip Adams
There are few sorrows, however poignant, in which a good income is of no avail. Logan Pearsall Smith
Sorrow is tranquility remembered in emotion. Dorothy Parker
There is no greater sorrow than to recall a happy time in the midst of wretchedness. Dante Alighieri
The pleasure that is in sorrow is sweeter than the pleasure of pleasure itself. Percy Bysshe Shelley