AMMONIUS HERMIAE (5th century A.D.), Greek philosopher, the son of Hermias or Hermeias, a fellow-pupil of Proclus. He taught at Alexandria, and had among his scholars Asclepius, John Philoponus, Damascius and Simplicius. His commentaries on Plato and Ptolemy are lost. Those on Aristotle are all that remain of his reputedly numerous writings. Of the commentaries we have-(1) one on the Isagoge of Porphyry (Venice, 1500 fol.); (2) one on the Categories (Venice, 1503 fol.), the authenticity of which is doubted by Brandis; (3) one on the De Interpretatione (Venice, 1503 fol.). They are printed in Brandis's scholia to Aristotle, forming the fourth volume of the Berlin Aristotle; they are also edited (1891-1899) in A. Busse's Commentaria in Aristot. Graeca. The special section on fate was published separately by J. C. Orelli, Alex. Aphrod., Ammonii, et aliorum de Fato quae supersunt (Zurich, 1824). A life of Aristotle, ascribed to Ammonius, but with more accuracy to John Philoponus, is often prefixed to editions of Aristotle. It has been printed separately, with Latin translation and scholia, at Leiden, 1621, at Helmstadt, 1666, and at Paris, 1850. Other commentaries on the Topics and the first six books of the Metaphysics still exist in manuscript. Of the value of the logical writings of Ammonius there are various opinions. K. Prantl speaks of them with great, but hardly merited, contempt.
For a list of his works see J. A. Fabricius, Bibliotheca Graeca, v. 704-707: C. A. Brandis, Uber d. Reihenf. d. Bucher d. Aristot. Org., 283 f.; K. Prantl, Gesch. d. Logik, i. 642.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)