Life
A child prodigy in Bukhara, Ibn Sina mastered medicine and philosophy young and served various Persian courts as physician and administrator amid political upheaval. He wrote the medical encyclopedia al-Qanun (the Canon) and the philosophical summa al-Shifa (the Healing), among hundreds of works, before his death in 1037.
The Struggle
His life was unsettled by the fall of patrons and shifting dynastic fortunes, forcing him to move from court to court, writing (tradition holds) even while on the run or imprisoned.
Teachings & Morals
Ibn Sina systematized Aristotelian and Neoplatonic philosophy in Arabic — his proof of God as the "Necessary Existent," his theory of the soul and the intellect — and organized all of medical knowledge in the Canon, which became the standard text in both the Islamic world and Europe for centuries.
Wars & Conflicts
A physician and philosopher, Ibn Sina took no part in war, though his career was buffeted by the wars and intrigues of the Persian courts he served.
The Debates
Historical figures are debated. What follows records the major questions raised by historians and within the traditions themselves — presented for study, not verdict.
His philosophical positions — on the eternity of the world and God's knowledge of particulars — were the very theses al-Ghazali attacked as unbelief in the Tahafut, making Avicenna the focus of the great reason-versus-revelation debate. His legacy is claimed and contested across philosophy and theology.
Legacy
Avicenna is among the most influential thinkers in history; the Canon of Medicine shaped medicine East and West into the early modern era, and his philosophy dominated later Islamic thought and reached medieval Europe. His figure here complements the philosophers' entry devoted to him.