Hildegard of Bingen was a visionary benedictin abbess, in the area of Mainz (Germany) in the XIIth century. She wrote an important naturalist work. A chapter of the Physica is dedicated to the bear. The role of the mother-bear is described. Bear is depicted as a bipolar animal, warm an cold, soft and irascible, rather close to Man. Comparaison with Hildegard's other texts about bear still not clarify the mystery surrounding the elaboration of her thoughts.
Hildegard of Bingen, medieval, bear, Physica, prematurity, saliva.