Simplicius' greatest contribution in his commentary on Aristotle on Physics 1.5-9 lies in his treatment of matter. The sixth-century philosopher starts with a valuable elucidation of what Aristotle means by 'principle' and 'element' in Physics. Simplicius' own conception of matter is of a quantity that is utterly diffuse because of its extreme distance from its source, the Neoplatonic One, and he tries to find this conception both in Plato's account of space and in a stray remark of Aristotle's. Finally, Simplicius rejects the Manichaean view that matter is evil and answers a Christian objection that to make matter imperishable is to put it on a level with God. This is the first translation of Simplicius' important work into English.

Simplicius' greatest contribution in his commentary on Aristotle on Physics 1.5-9 lies in his treatment of matter. This is its first translation into English. The sixth-century philosopher starts with a valuable elucidation of what Aristotle means by 'principle' and 'element' in Physics. Simplicius' own conception of matter is of a quantity that is utterly diffuse because of its extreme distance from its source, the Neoplatonic One, and he tries to find this conception both in Plato's account of space and in a stray remark of Aristotle's. Finally, Simplicius rejects the Manichaean view that matter is evil and answers a Christian objection that to make matter imperishable is to put it on a level with God.

Aristotle classified the things in the world into ten categories: substance, quantity, quality, relative, etc. Plotinus, the founder of Neoplatonism, attacked the classification, accepting only these first four categories, rejecting the other six, and adding one of this own: change. He preferred Plato's classification into five kinds which included change. In this part of his commentary, Simplicius records the controversy on the six categories which Plotinus rejected: acting, being acted upon, being in a position, when, where, and having on. Plotinus' pupil and editor, Porphyry, defended all six categories as applicable to the physical world, even if not to the world of Platonic Forms to which Platonist studies must eventually progress. Porphyry's pupil, lamblichus, went further: taken in a suitable sense, Aristotle's categories apply also to the world of Forms, although they require Pythagorean reinterpretation. Simplicius may be closer to Porphyry that to lamblichus, and indeed Porphyry's defence established Aristotle's categories once and for all in Western thought. But the probing controversy of this period none the less revealed more effectively than any discussion of modern times the profound difficulties in Aristotle's categorical scheme.

With this translation, all 12 volumes of translation of Simplicius' commentary on Aristotle's Physics have been published (full list below). In Physics 1.1–2, Aristotle raises the question of the number and character of the first principles of nature and feels the need to oppose the challenge of the paradoxical Eleatic philosophers who had denied that there could be more than one unchanging thing. This volume, part of the groundbreaking Ancient Commentators on Aristotle series, translates into English for the first time Simplicius' commentary on this selected text, and includes a brief introduction, extensive explanatory notes, indexes and a bibliography. Previous published volumes translating Simplicius' commentary on Aristotle's Physics can all be found in Bloomsbury's series: - On Aristotle Physics 1.3–4, tr. P. Huby and C. C. W. Taylor, 2011 - On Aristotle Physics 1.5–9, tr. H. Baltussen, M. Atkinson, M. Share and I. Mueller, 2012 - On Aristotle Physics 2, tr. B. Fleet, 1997 - On Aristotle Physics 3, tr. J. O. Urmson with P. Lautner, 2001 - On Aristotle Physics 4.1–5 and 10–14, tr. J. O. Urmson, 1992 - On Aristotle on the Void, tr. J. O. Urmson, 1994 (=Physics 4.6–9; published with Philoponus, On Aristotle Physics 5–8, tr. P. Lettinck) - On Aristotle Physics 5, tr. J. O. Urmson, 1997 - On Aristotle Physics 6, tr. D. Konstan, 1989 - On Aristotle Physics 7, tr. C. Hagen, 1994 - On Aristotle Physics 8.1–5, tr. I. Bodnar, M. Chase and M. Share, 2012 - On Aristotle Physics 8.6–10, tr. R. McKirahan, 2001

Simplicius' greatest contribution in his commentary on Aristotle on Physics 1.5-9 lies in his treatment of matter. The sixth-century philosopher starts with a valuable elucidation of what Aristotle means by 'principle' and 'element' in Physics. Simplicius' own conception of matter is of a quantity that is utterly diffuse because of its extreme distance from its source, the Neoplatonic One, and he tries to find this conception both in Plato's account of space and in a stray remark of Aristotle's. Finally, Simplicius rejects the Manichaean view that matter is evil and answers a Christian objection that to make matter imperishable is to put it on a level with God. This is the first translation of Simplicius' important work into English.

"Supporting the twelve volumes of translation of Simplicius' great commentary on Aristotle's Physics , published between 1992 and 2021, this volume presents a general introduction to the commentary. It covers the philosophical aims of Simplicius' commentaries on the Physics and the related text On the Heaven ; Simplicius' methods and his use of earlier sources; key themes and comparison with Philoponus' commentary on the same text. In the first chapters of his work, Aristotle raises the question of the number and character of the first principles of nature and feels the need to oppose the challenge of the paradoxical Eleatic philosophers who had denied that there could be more than one unchanging thing. By 1.7, Aristotle reaches the conclusion that we must distinguish one substratum and two contrary states that it may possess: a form and a privation of that form. But this only foreshadows what is to follow. In book 2, Aristotle introduces four kinds of explanatory factor: besides the material substratum of a thing and its form, there is its function or purpose, and the efficient cause of its taking on new forms. He goes on in Books 3 to 8 to discuss causation, chance and necessity, motion, infinity, vacuum, spatial relations and the continuum and he postulates the need for a divine first mover as the source of purposive motion in celestial bodies."--