Hildegard of Bingen's Book of Divine Works: With Letters and Songs

As revealed in these writings, Hildegard's mystical ordering of the universe involves a profound connection between the divine and the material planes, serving to reunite with science in a dynamic, holistic cosmology.

Mysticism has a long history in Christianity, and 12th-century Hildegard of Bingen is one of Christianity's most admired mystics. The Book of Divine Works is her record of visions from God. Included are a number of letters and sermons that she wrote to various figureheads of the time, along with 15 songs, complete with lyrics and medieval notation.