Butcher, a scholar of medieval Christianity, offers fresh translations of selected writings by 12th-century German abbess Hildegard of Bingen. A fearless advocate of the truth as she saw it and a correspondent of kings and popes, Hildegard was not only a nun but a poet and mystic of practically psychedelic visions. As Butcher reminds us, an album of her sacred songs, A Feather on the Breath of God, briefly went to the top of the Billboard charts 25 years ago, and Hildegard has proved durably appealing to feminists, Christians, and mystic seekers of all stripes. This brief and flowingly translated selection should renew her appeal. For most collections.