Heinrich Cornelius Agrippa

Heinrich Cornelius Agrippa von Nettesheim (1486–1535) was a German Renaissance thinker whose work ranged over medicine, law, theology and the occult. He is often described as a polymath, and he is remembered above all for his writings on magic, Kabbalah and Hermeticism. He also worked as a soldier, lecturer, lawyer and court official, but his reputation rests on an attempt to build one system of knowledge that joined Neoplatonism with the magical traditions of his day.

Born in 1486 near Cologne into a family of minor nobility, he studied at the university there from 1499 to 1502, where he was probably drawn to occult ideas through the Albertist teaching strong in its arts faculty. He later spent time in Paris. He served as a soldier under Emperor Maximilian I, travelled through Spain, Italy and France, and held teaching posts at Dole and Pavia. In Metz, where he was town advocate, he defended a woman accused of witchcraft; the case drew him into a dispute with an inquisitor and cost him his post in 1520. He then practised medicine in several Swiss and French towns, became physician to Louise of Savoy in Lyon and later served Margaret of Austria as archivist and historiographer. His last years were marked by debts, quarrels with theologians and imprisonment. He died at Grenoble in February 1535.

His main work, De occulta philosophia, divided the subject into three books: natural magic, which belongs to physics; celestial magic, tied to mathematics and astrology; and ceremonial magic, linked to theology. His cosmos is an organic whole, ordered in levels and animated by a universal spirit. God governs it but entrusts the execution of his will to servants, among them demons. Humans, as a microcosm, mirror both the universe and God, and astrology and ritual magic were means of acting on the links between things. Much of his material came from Ficino, Reuchlin and Pico della Mirandola, so his Kabbalah is closer to a received body of lore than to a careful study of Jewish sources.

In 1526 he published De incertitudine et vanitate scientiarum, a skeptical satire on the state of learning. He is said to have turned later toward the vanity of all human knowledge and the authority of the Bible. Scholars still debate how far this was a rejection of magic, since some argue he never abandoned it entirely and only withdrew an early draft of his occult work. His writings also brought him into conflict with the theology faculties of Louvain and the Sorbonne.

His occult treatise was widely read by early modern esotericists, and the Inquisition placed it on the Index of prohibited books. His skepticism influenced thinkers such as Montaigne, Descartes and Goethe. His defence of women, De nobilitate et praecellentia foeminei sexus, written in 1509 and published in 1529, is cited in histories of feminism for arguing the theological and moral superiority of women. Some historians credit his occult doctrines with a role in the search for natural forces that preceded modern science, though this interpretation remains debated.