Spirituality concerns what we do with desire. It takes its root in the eros inside of us and it is all about how we shape and discipline that eros. John of the Cross, the great Spanish mystic, begins his famous treatment of the soul’s journey with the words: “One dark night, fired by love’s urgent longings.”6 For him, it is urgent longings, eros, that are the starting point of the spiritual life and, in his view, spirituality, essentially defined, is how we handle that eros.
