Books by of Cilicia Simplicius

In "Categories" chapters 7 and 8 Aristotle considers his third and fourth categories - those of Relative and Quality. This text provides a translation of Simplicius' commentary on "Categories".

Simplicius produced detailed commentaries on several of the works of Aristotle. This is Urmson's translation of Simplicius' commentary on "Physics 5" in which Aristotle lays down some of the principles of his dynamics and theory of change.

Chapters 5 and 6 of Aristotle's "Categories" describe his first two categories, Substance and Quantity. Simplicius' commentary is our most comprehensive account of the debate on the validity of these categories. This text provides a translation of Simplicius' work, with an introduction.