Hildegard of Bingen, the first German mystic, is one of the most influential women in European history. Born in 1098 in Bockelheim on the Nahe River, Hildegard had her first vision at the age of six, a phenomenon she would continue to experience the rest of her life. At the behest of the archbishop of Mainz, Hildegard set upon recording her visions in writing. Her writings soon propelled her from Benedictine abbess to celebrity as determined reformer, castigating seer, theoretical musician, patient adviser, and exorcist. A woman of extraordinarily energetic and independent mind, Hildegard...

The Lingua Ignota, "brought forth" by the twelfth-century German nun Hildegard of Bingen, provides 1012 neologisms for praise of Church and new expression of the things of her world. Noting her visionary metaphors, her music, and various medieval linguistic philosophies, Higley examines how the "Unknown Language" makes arid signifiers green again. This text, however, is too often seen in too narrow a context: glossolalia, angelic language, secret code. Higley provides an edition and English translation of its glosses in the Riesencodex (with assistance from the Berlin MS), but also places it...