Need-love cries to God from our poverty; Gift-love longs to serve, or even to suffer for, God; Appreciative love says: “We give thanks to thee for thy great glory.” Need-love says of a woman “I cannot live without her”, Gift-love longs to give her happiness, comfort, protection – if possible, wealth; Appreciative love gazes and holds its breath and is silent, rejoices that such a wonder should exist even if not for him, will not be wholly dejected by losing her, would rather have it so than never to have seen her at all.
-C.S. Lewis, The Four Loves