Yale Library of Medieval Philosophy Series – Serie

The Spanish Jesuit Francisco Suarez (1548-1617) was an eminent philosopher and theologian whose Disputationes Metaphysicae was first published in Spain in 1597 and was widely studied throughout Europe during the seventeenth century. The Disputationes Metaphysicae had a great influence on the development of early modern philosophy and on such well-known figures as Descartes and Leibniz. This is the first time that Disputations 17, 18, and 19 have been translated into English.The Metaphysical Disputations provide an excellent philosophical introduction to the medieval Aristotelian discussion of efficient causality. The work constitutes a synthesis of monumental proportions: problematic issues are lucidly delineated and the various arguments are laid out in depth. Disputations 17, 18, and 19 deal explicitly with such issues as the nature of causality, the types of efficient causes, the prerequisites for causal action, causal contingency, human free choice, and chance.

This book offers the first English translation of the Quodlibetal Questions of William of Ockham (c. 1285-1347)—reflections on a variety of topics in logic, ontology, natural philosophy, philosophical psychology, moral theory, and theology by one of the preeminent thinkers of the Middle Ages. It is based on the recent critical edition of Ockham’s theological and philosophical works.

This is the first complete English translation of On the Purity of the Art of Logic, a handbook of logic written in Latin by English philosopher Walter Burley (c.1275–1344/5). The work circulated in the Middle Ages in two versions, a shorter and a longer one, both translated here by Paul Vincent Spade. The translations are based on the only complete edition of Burley’s treatises, corrected by Spade on the basis of one of the surviving manuscripts. The book also includes an extensive introduction, explanatory notes, a table of corresponding passages between the two versions, a select annotated bibliography, and three indexes. A contemporary of John Duns Scotus and William of Ockham, Burley was active at the universities of both Paris and Oxford. He became one of the most important figures in the transformation of medieval logic and semantics that took place in the early fourteenth century. Burley used new tools and techniques of logical and semantical analysis, yet in many cases he used them in defense of traditional views, such as a realist metaphysical theory of “universals.” On the Purity of the Art of Logic shows both these sides of Burley—the innovator and the conservative—as well as some of the ways in which his views corresponded or clashed with those of William of Ockham.