"The 18th Symposium Aristotelicum, dedicated to the first Book of Aristotle's Metaphysics, was held in Leuven from 7th to 13th July 2008."--Pref.

The volumes of the Symposium Aristotelicum have become essential reference works for the study of Aristotle. In this nineteenth volume, eleven distinguished scholars of ancient philosophy provide a running commentary on the first book of Aristotle's Physics, a central treatise of the Aristotelian corpus that aims at knowledge of the principles of physical change. Along with the general introduction, the ten chapters together comment on the entirety of the Aristotelian text and discuss the philosophical issues that are raised in it in detail. Aristotle is shown to be in dialogue with the divergent doctrines of earlier philosophers, namely with the Eleatics' monism, with Anaxagoras' theory of mixture, and finally with the Platonist dyadism that posits the two principles of Form and the Great and Small. Aristotle uses critical examination of his predecessors' views as the basis for formulating his own theory of the principles of natural things, which are fundamental for the entire Aristotelian study of the natural world. He provides his own solution to the problem of coming-to-be and passing-away by distinguishing between coming in actuality and in potentiality. Comprehensive analysis of Aristotle's doctrines and arguments, as well as critical discussion of rival interpretations, will make this volume a valuable resource for scholars of Aristotle.

Along with Plato and Socrates, Aristotle (384-322 B.C.) is one of the triumvirate of philosophers responsible for the establishment of Western philosophy as it exists today. Socrates, Plato and Aristotle were among the first to refine philosophical thought, and Socrates is credited with devising the Socratic Method as a way to argue and debate points rationally. The Ancient Greek philosophers further stressed the importance of virtue and stoicism, advocating the improvement of one's self through constant learning and knowledge. These teachings and practices formed the foundation for philosophy and psychology as fields of study. Still, Aristotle was very much his own philosopher. Though he studied at Plato's famous academy, he was not hesitant to counter or criticize Plato's philosophical stances on certain issues. Aristotle was the most renowned Ancient Greek philosopher for nearly 2,000 years, and his most famous work is Rhetoric, his preeminent treatise on the art of persuasion. Aristotle is widely credited with being the forbearer of the study of the art of rhetoric.

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.

The Metaphysics presents Aristotle's mature rejection of both the Platonic theory that what we perceive is just a pale reflection of reality and the hardheaded view that all processes are ultimately material. He argued instead that the reality or substance of things lies in their concrete forms, and in so doing he probed some of the deepest questions of philosophy: What is existence? How is change possible? And are there certain things that must exist for anything else to exist at all? The seminal notions discussed in The Metaphysics - of 'substance' and associated concepts of matter and form, essence and accident, potentiality and actuality - have had a profound and enduring influence, and laid the foundations for one of the central branches of Western philosophy.

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.