Cornelius Plantinga in his highly recommended, Engaging God’s World (page 7):
Our “inconsolable secret,” says C.S. Lewis, is that we are full of yearnings, sometimes shy and sometimes passionate, that point us beyond the things of earth to the ultimate reality of God. And summer mornings on which we awaken to “stabs of joy” are clues that this is so.
See also, “Feeling Down at the end of Christmas Season” and