 Alexander of Aphrodisias. (i) Commentaries. The commentary by Alexander on Book Lambda of the Metaphysics, lost in Greek together with the rest of Alexander’s commentary beyond book Delta, is said to have been translated into Syriac by Hunayn ibn  Ishaq.[75]  The Arabic translation, based in all likelihood on this Syriac version, is lost, but several extracts of it survive in Averroes’ commentary on the Metaphysics (Freudenthal 1885; Bouyges 1952, clxxviii-clxxix). (ii) Personal works. Hunayn ibn Ishaq translated Qu. III 3 on sense-perception (Ruland 1978), and his son Ishaq in all likelihood is the translator of Alexander’s De  Anima.[76]  Two Arabic translations of the treatise On the Principles of the  All[77]  have come down to us: one by Ishaq ibn  Hunayn[78]  and the other by Abu ʿUthman al-Dimashqi (Genequand 2001, 31–9; Genequand 2017, 14–16). Even more important for the subsequent developments of falsafa was Ishaq’s Arabic translation of the short treatise On Intellect (see Finnegan 1956; Badawi 1971, 31–42; Goulet-Aouad 1989, 134; Geoffroy 2002).