Abstract

Ammonius, Son of Hermias, is one of the noblest commentators of Aristotle’s philosophy. He taught most of the important Platonists of the late 5th and early 6th centuries. The beginning of his book, on Aristotle’s Categories, he mentions some points which are useful to have a better knowledge of Aristotle’s philosophy. In his book, he introduces and classifies Aristotle’s works. Then, he expresses Aristotle's purpose and the quality of representing his thoughts, as well as the way of studying the book and the features of the person who wants to study or comment on Aristotle’s works. Such commentary is necessary not only for Aristotle’s philosophy but also for understanding the general philosophy. In addition, it shows the important role of Aristotle in Ammonius' thoughts and his efforts to reach an agreement between Aristotle, Plotinus, and Plato. Farabi in the same book of Ma Yanbagi An Yataallam Gab Taalome alFalsafate Arasto Except in some few cases, repeats Ammonius’ words; so we can assume that the book is completely under the influence of Ammonius' work.