  During this “first Byzantine Renaissance”, as the period has sometimes been characterized, the archbishop of Caesarea, Arethas (c. 850–932/44) also commented on Aristotle’s Categories and Porphyry’s Isagoge (cf. section 1.2). He is better known, however, for having been instrumental in the transmission of ancient texts, in particular the Platonic corpus. He commissioned the transcription of a complete copy of Plato’s works to which he added marginal notes; the first part of his Plato text is extant as the famous Clarkianus 39 manuscript in the Bodleian Library of Oxford.