Ibn Rushd (Averroes)

By Nadia El-Masri

Córdoba in the twelfth century was the largest city in Europe and one of its most learned, and Ibn Rushd — Averroes to the Latin West — was its most formidable mind. Born in 1126 to a family of qadis, he became one himself: chief judge of Seville and Córdoba, court physician to the Almohad caliphs Abu Yaqub Yusuf and al-Mansur, and the most systematic philosopher Islam ever produced. His project was audacious in its simplicity. Aristotle, he believed, had discovered the truth about nature and logic; the task of philosophy was not to invent but to recover — to strip away the confusions of later commentators and read Aristotle whole.

So he wrote commentaries — short, middle, and long — on nearly the entire Aristotelian corpus: logic, physics, metaphysics, the soul, the heavens. In the Fasl al-Maqal, the Decisive Treatise, he argued the position that would echo for centuries: where philosophy and scripture seem to conflict, scripture must be read allegorically, because truth cannot contradict truth. Reason was not the enemy of faith; it was its deepest expression. In the Tahafut al-Tahafut, the Incoherence of the Incoherence, he demolished al-Ghazali's attack on philosophy point by point, defending the eternity of the world and the necessity of causal law against the theologians.

None of this came free. In 1195, court politics turned; the caliph, courting orthodox support, banished him to Lucena and ordered his books burned — though not before they had crossed the Strait. In Toledo and Paris, translators rendered the commentaries into Latin, and a generation of Christian scholars discovered Aristotle through an Andalusian Muslim. Albertus Magnus and Thomas Aquinas argued with him line by line; the Paris Arts faculty split into Averroists and their enemies, and the condemnations of 1277 named his doctrines among the errors. He died in Marrakech in 1198, recalled to favor but broken.

His legacy is the strangest compliment in intellectual history: the West learned its Aristotle from a man it called simply the Commentator, and European rationalism — from the universities of Paris to the Enlightenment — carries his watermark. The banishment failed. The books, unlike the court, survived.

Impact on civilization

Ibn Rushd reintroduced Aristotle to Europe and, with him, the conviction that reason is an autonomous court of judgment. His doctrine that truth cannot contradict truth — that philosophy and revelation, rightly understood, agree — gave Latin Scholasticism its method and its nerve: Aquinas's synthesis is unthinkable without the Commentator to argue against. The Averroist movement kept a hard rationalism alive in Paris for two centuries, and his defense of causal necessity against theological occasionalism preserved the very idea of natural law that science would later need. He is the hinge on which medieval thought turns toward the modern.