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Simplicius Of Cilicia (flourished c. 530) was a Greek philosopher whose learned commentaries on Aristotle’s De caelo (ā€œOn the Heavensā€), Physics, De anima (ā€œOn the Soulā€), and Categories are considered important, both for their original content and for the fact that they contain many valuable fragments of pre-Socratic philosophers. Simplicius studied at Athens and at Alexandria and spent most of his life in Athens, except for a short period after the closing of the school of philosophy in 529. A commentary on the Encheiridion of Epictetus and a work on quadratures are extant.

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