There is a hunger in the modern world for spirituality. One vast resource of spiritual wisdom comes from the pre-Reformation church–from the martyrs of the first centuries of Christianity, through the long tradition of monasticism, to the medieval Christian mystics. These are the deep wells of Christian reflection from persons such as John Chrysostom, Augustine, Benedict, Francis of Assisi, Bonaventure, Bernard of Clairvaux, Meister Eckhart, Hildegard of Bingen, and Julian of Norwich, to mention...