In Posterior Analytics Aristotle elaborates his assessment of how universal truths of science can be scientifically explained as inevitable in demonstrative proofs. In this commentary Philoponus takes these issues further.

This book is an important publication that will certainly help to make the work of Philoponus better known. The translation – the first ever into any modern language – makes the Greek text accessible to those with little or no Greek and will be an indispensable tool for students and scholars of ancient thought. The notes clarify many strange passages and provide valuable information about the tradition Philoponus is working in. Moreover, the book is well edited.8 Thus, there can be no doubt that many scholars and students will find the book highly useful.

The Ancient Commentators on Aristotle series is a prestigious scholarly project, which translates into English the principal works of the Neoplatonist commentators on Aristotle. The translation in each volume is accompanied by an introduction, comprehensive commentary notes, bibliography, glossary of translated terms and a subject index. Praise for the series: "A truly breathtaking achievement, with few parallels in the history of scholarly endeavour" Times Literary Supplement "Well-known and renowned" Bryn Mawr Classical Review "One of the great scholarly achievements of our time" British Journal for the History of Philosophy "Without any doubt, it is this enterprise of R. Sorabji which has had the greatest impact among historians of ancient philosophy." Ilsetraut Hadot in Le Néoplatonicien Simplicius à la lumière des recherches contemporaines