 Syrianus’ commentaries were greatly admired by later generations of Neoplatonists (Isidore and Damascius regarded him as one of the best exegetes), and he is therefore often referred to and quoted. Collecting these references, R.L. Cardullo (1985) inferred that, apart from the extant work on the Metaphysics, Syrianus commented on Aristotle’s Categories, De interpretatione, Prior Analytics, Physics, De caelo, and De anima. Asclepius of Tralles (mid 6th century), in his commentary on the Metaphysics, preserves two fragments of Syrianus’ exegesis of book VII (Z) of that work. There is also evidence (in Proclus) that Syrianus commented on Plato’s Timaeus and Parmenides, but it is not clear whether these comments were formally composed, or circulated merely within the school as transcripts of his lectures.