The philosophical culture of the Islamic world: a millennium of argument in Arabic, Persian and Hebrew, beginning with the Baghdad translation of Greek science and running through Avicenna's system, al-Ghazālī's critique, and Averroes's defense of Aristotle — then feeding Latin Europe and living on in the madrasa curriculum today.
Book of Healing, Incoherence of the Philosophers, Incoherence of the Incoherence
Origins & Development
The eighth–tenth century translation movement in Baghdad renders Greek philosophy and science into Arabic; al-Kindī (c. 800–870) is the first philosopher of the new Arabic idiom — see the early Islamic period.
Al-Fārābī (c. 870–950), "the Second Teacher" after Aristotle, fuses Plato's political philosophy with Greek logic in an Islamic frame.
Avicenna (980–1037) builds the most influential system: existence/essence, the necessary being, the flying-man argument — see his metaphysics.
Al-Ghazālī (1058–1111) attacks the metaphysicians' necessity and eternity in the Incoherence of the Philosophers, while keeping logic; Averroes (1126–1198) answers doctrine by doctrine — the skepticism and Aristotelian poles of the tradition.
The later tradition shifts east: illuminationism in Persia (see Persian philosophy) and the vivification of the religious sciences in later Islamic thought.
Central Ideas
Falsafa and kalām: philosophy (falsafa) and rational theology (kalām) develop in tension — the ethics and theology of Islam argued with Greek tools.
Necessary vs possible being: Avicenna's proof of God from contingency — everything that exists but need not, requires a necessarily existent cause.
Emanation and creation: how a single necessary being yields a plural world; the Neoplatonic inherited structure that al-Ghazālī targets and Averroes recasts.
Prophecy and politics: al-Fārābī's virtuous city joins Plato's philosopher-king to the prophet-lawgiver — political philosophy before Ibn Khaldūn.
Mystical knowledge:Sufism claims a knowing above demonstration — from al-Ghazālī's turn to Ibn 'Arabī's metaphysics of unity.
Schools & Key Figures
Falāsifa: al-Kindī, al-Fārābī, Avicenna, Averroes — the Greek-inherited rationalism.
Ash'arite kalām: occasionalist theology of atom and accident; al-Ghazālī's synthesis of kalām, falsafa, and Sufism.
Andalusian school: Ibn Bājja, Ibn Tufayl's Hayy ibn Yaqzān, and Averroes's commentaries that taught Latin Europe Aristotle.
Illumination and after: Suhrawardī and Mullā Ṣadrā carry the tradition into Persian — the Persian line.
Jewish and Christian participants:Maimonides writes Guide for the Perplexed inside the same Arabic philosophical culture.
Influence & Reception
Latin translations from the twelfth century make Avicenna and Averroes part of European university culture — the documented influence on the Latin West runs through Scholasticism to Descartes.
The commentaries of Averroes ("Averroism") provoked bans and debates in Paris — philosophy as controversy from the start.
Today the tradition is studied as both a historical pillar of world philosophy and a living seminary curriculum in Iran, Turkey, and the Arab world.