 Aedesia and her sons must have returned before 475 from their study in Athens under Proclus to Alexandria, where Ammonius began lecturing on philosophy at the school of Horapollon. We have reports of lectures on Plato by Ammonius from the beginning and end of his career. Sometime between 475 and 485 Damascius, who studied under Ammonius and his brother Heliodorus, heard Ammonius lecture on Platonic philosophy; about 515 Olympiodorus heard him lecture on the Gorgias (Olympiodorus, in Gorg. 199,8–10). Asclepius mentions lectures (or seminars: sunousiai, in Met. 77,4) on Plato and refers to an ‘exegesis’ (in Met. 70,31) of the Theaetetus. Nonetheless, Damascius reports that Ammonius was better versed in Aristotle, and it is his lectures on Aristotle which, for the most part, have been transmitted to us.