When several things are ordained to one thing, one of them must rule or govern and the rest be ruled or governed, as the Philosopher, teaches in the Politics. This is evident in the union of soul and body, for the soul naturally commands and the body obeys. The same thing is true of the soul’s powers, for the concupiscible and irascible appetites are ruled in a natural order by reason. Now all the sciences and arts are ordained to one thing, namely, to man’s perfection, which is happiness. Hence one of these sciences and arts must be the mistress of all the others, and this rightly lays claim to the name wisdom; for it is the office of the wise man to direct others. Aeterna Press

Thomas's Commentary on the Book of Causes, composed during the first half of 1272, offers an extended view of his approach to Neoplatonic thought and functions as a guide to his metaphysics. Though long neglected and, until now, never translated into English, it deserves an equal place alongside his commentaries on Aristotle and Boethius. In addition to the extensive annotation, bibliography, and thorough introduction, this translation is accompanied by two valuable appendices. The first provides a translation of another version of proposition 29 of the Book of Causes, which was not known to St. Thomas. The second lists citations of the Book of Causes found in the works of St. Thomas and cross-references these to a list showing the works, and the exact location within them, where the citations can be found.

This is the first of a two-volume edition of Alexander of Aphrodisias’ commentary on Aristotle’s Metaphysics. The new edition, which includes a philosophical and philological introduction, as well as notes to textcritical issues, is based on a critical evaluation of the entire manuscript tradition of the commentary. It also takes into account its indirect tradition and the Latin translation of Juan Ginès Sepúlveda.

Few philosophical books have been so influential in the development of Western thought as Aristotle’s Metaphysics. For centuries Aristotle’s most celebrated work has been regarded as a source of inspiration as well as the starting point for every investigation into the structure of reality. Not surprisingly, the topics discussed in the book – the scientific status of ontology and metaphysics, the foundations of logical truths, the notions of essence and existence, the nature of material objects and their properties, the status of mathematical entities, just to mention some – are still at the centre of the current philosophical debate and are likely to excite philosophical minds for many years to come. This volume reconstructs in fourteen chapters a particular phase in the long history of the Metaphysics by focusing on the medieval reception of Aristotle’s masterpiece, specifically from its introduction in the Latin West in the twelfth through fifteenth centuries. Contributors include: Marta Borgo, Matteo di Giovanni, Amos Bertolacci, Silvia Donati, Gabriele Galluzzo, Alessandro D. Conti, Sten Ebbesen, Fabrizio Amerini, Giorgio Pini, Roberto Lambertini, William O. Duba, Femke J. Kok, and Paul J.J.M. Bakker.

A distinguished group of scholars of ancient philosophy here presents a systematic study of the twelfth book of Aristotle's Metaphysics. Lambda, which can be regarded as a self-standing treatise on substance, has been attracting particular attention in recent years, and was chosen as the focusof the fourteenth Symposium Aristotelicum, from which this volume derives. At the Symposium, each of Lambda's ten chapters was taken in turn as the subject of a session at which a specially written paper was read to and discussed by the assembled symposiasts. (The ninth chapter commanded twosessions by dint of its particular difficulty.) The papers have been revised in the light of discussion, and are now offered to a wider audience as a discursive commentary on points of particular philosophical interest covering all of Lambda. Michael Frede's extensive Introduction aims to give abroader view of Lambda as a whole and the problems it raises, and thus to provide the context for the discussion of each of the chapters. This volume will be a resource of great value and interest for anyone working on ancient metaphysics and theology.

Laura Castelli presents a new translation of the tenth book (Iota) of Aristotle's Metaphysics, together with a comprehensive commentary. Castelli's commentary helps readers to understand Aristotle's most systematic account of what it is for something to be one, what it is for something to be a unit of measurement, and what contraries are.