Abstract
As R. Sorabji says in his general introduction, "The 15,000 pages of the Ancient Greek Commentaries on Aristotle are the largest corpus of Ancient Greek philosophy that has not yet been translated into English or other modern European languages". Besides its considerable intrinsic interest, this corpus is an important source of late Greek philosophy, and a thorough acquaintance with it underlies the development of Arabic philosophy, whence it becomes a "silent partner" in Latin philosophy after 1200.