Who was Hildegard of Bingen?
A twelfth-century German abbess, composer, writer, natural philosopher and political correspondent — one of the few medieval women whose work survives in substantial quantity, and whose range is unusual for anyone of any period.
Her position. Born around 1098 and placed in religious enclosure as a child, she became head of her community and later founded her own monastery at Rupertsberg, negotiating independence from the male house that had authority over it — a considerable political achievement.
Her visions. She reported visionary experiences from early childhood, describing a light she called the "reflection of the living Light", and recorded them from her forties in Scivias and later works. Modern commentators, including the neurologist Oliver Sacks, have suggested descriptions consistent with migraine aura — an interpretation that is plausible and unprovable, and which does not bear on the content of the work.
Why the visions mattered institutionally. Women were barred from teaching theology. Framing knowledge as divinely received rather than personally reasoned gave her standing to write on doctrine, and her work was examined and endorsed by Pope Eugenius III, which authorised a public role otherwise unavailable.
Her actual output:
Music. A large surviving body of monophonic chant, distinctive for its wide vocal range and soaring melodic lines, plus Ordo Virtutum, a morality play set to music and among the earliest surviving works of its kind.
Natural history and medicine — Physica and Causae et Curae — cataloguing plants, animals, minerals and remedies, valuable as a record of twelfth-century practical knowledge rather than as medicine.
Theology, in three major visionary works.
Correspondence with popes, emperors and abbots, frequently offering unsolicited and forthright advice.
A constructed language, the Lingua Ignota, with its own alphabet — one of the earliest known invented languages.
Preaching tours, which was extraordinary for a woman of the period.
She was named a Doctor of the Church in 2012, one of only a handful of women to hold that title.