Philosophy
A 12th-century judge argued philosophy and religious faith couldn't really conflict
Ibn Rushd (known in Europe as Averroes) wrote a direct rebuttal to theologians who claimed philosophy led to heresy, arguing that reason and revealed truth, properly understood, arrive at the same conclusions. His commentaries on Aristotle were so influential in medieval Europe that scholastic philosophers simply called him 'The Commentator.'
— Ibn Rushd (Averroes), The Decisive Treatise (Fasl al-Maqal) — c. 1179–1180