1261-64) [t], includes criticism of the Aristotelianism of Ibn Rushd (Averroës); also De Unitate Intellectus Contra Averroistas ( Paris 1270) [t]. Bar 'Ebraya [Abu-l-Farag] ((1226–1286), Catholicos of the Syriac Orthodox Church , learned theologian, prolific author, his spiritual treatise in Syriac Kethabha dhe yauna [Book of the Dove], as well as