Avicenna

Born near Bukhara in 980, this Persian polymath became one of the most influential scholars of the medieval world. He is widely known in Arabic as Ibn Sina and in Latin as Avicenna, and he wrote on medicine, philosophy, logic, and the natural sciences.

His best-known medical work, The Canon of Medicine, became a major reference text far beyond his own time, while The Book of Healing explored philosophy and science on a grand scale. He is especially remembered for developing ideas about reason, metaphysics, and the relationship between essence and existence.

He spent much of his life moving between courts and cities in Central Asia and Iran, working as both a scholar and a physician, and died in 1037. Centuries later, his influence can still be felt in the history of medicine and in philosophical traditions across the Islamic world and Europe.