ISIDORE OF ALEXANDRIA' (f7. c. A.D. 50o), Greek Neoplatonist, head of the school in Athens in succession to Marinus who followed Proclus. He is known principally as the preceptor of Damascius who wrote a favourable Life of Isidorus. He was more of an enthusiast than a thinker, and inclined to theosophical speculation.
Damascius' Life is preserved by Photius in the Bibliotheca, and the fragments are printed in the Didot edition of Diogenes Laertius. See Agathias, Hist. ii. 3o ; Photius, Bibliotheca, 181.