“ It is a manual of “popular mythology as expounded in the etymological and symbolical interpretations of the Stoics” (Sandys) , and although marred by many absurd etymologies, abounds in beautiful thoughts (ed. C. Lang, 1881) . Simplicius and Porphyry refer to his commentary on the Categories of Aristotle, whose philosophy he is said to have defended against an opponent Athenodorus in a treatise Ἀντιγραφὴπρὸς Άθηνόδωρον. His Aristotelian studies were probably his most important work. ”