Hildegard of Bingen is everyone's secret passion these days. Here is a tumultuous year in the life of the great twelfth-century Benedictine abbess, mystic, composer, healer, writer, and advocate of women's full participation in the life of the spirit. Considered a saint in Germany, Hildegard left us three books of her visions in which she often saw the creation as a living, pulsing being, 77 liturgical songs, the first morality play, a book on the...