 Apart from the texts written by Syrianus that survive and are discussed in more detail under (3) below, there is evidence for a much wider literary output. According to the Suda, a 10th century Byzantine encyclopedia, Syrianus wrote seven books of commentary on Homer, four on Plato’s Republic, two on the theology of Orpheus as well as treatises on the Homeric Gods, on the agreement of Orpheus, Pythagoras and Plato on the subject of oracles (in no less than ten books), and other exegetical works. This list is evidently not complete because it fails to mention any work on Aristotle; nor do we have any means of verifying the attribution of these works to Syrianus. As such, it would not be unusual at all for a Platonic philosopher to write commentaries on Homer and Orphic poetry, given that these early literary texts were thought to be replete with hidden meaning and arcane revelations. Moreover, shortly before his death Syrianus offered Proclus and Domninus a course on either the Chaldean Oracles or the Orphic Poems.