Hesdai Crescas was a true representative of the interpretation of the Arabic and Hebrew philosophic traditions. This volume reprints Harry Austryn Wolfson’s now classic study of Crescas’ Or Adonai, a historical and critical investigation of the main problems of Aristotle’s Physics and De Caelo.

In this authoritative study Professor Wolfson’s purpose is to trace the processes of reasoning by which Philo Judaeus of Alexandria arrived at his philosophic principles. These principles later became the common foundations of Jewish, Christian, and Moslem philosophy, and in the 17th century were made the target of attack by Spinoza. This comprehensive work will be indispensable to all serious students of Philo’s thought.

In this authoritative study Professor Wolfson’s purpose is to trace the processes of reasoning by which Philo Judaeus of Alexandria arrived at his philosophic principles. These principles later became the common foundations of Jewish, Christian, and Moslem philosophy, and in the 17th century were made the target of attack by Spinoza. This comprehensive work will be indispensable to all serious students of Philo’s thought.

The object of this work is to apply the historico-critical method to Spinoza’s Ethics. Starting with the assumption that the Ethics is primarily a criticism of the fundamental problems of mediaeval philosophy, the work proceeds to analyze these problems, to set forth their salient features, to construct hypothetically the arguments of which the criticism is made up, and to show how these arguments and criticism underlie the statements which we have before us in the Ethics. The Ethics thus emerges as a logically constructed work, throughout which there is order and sequence and continuity; propositions apparently disconnected group themselves into unified and coherent chapters; words, phrases, and passages, apparently meaningless or commonplace, assume meaning and significance; and the philosophy of Spinoza, as a systematic whole and in all its fullness of detail, appears in a new light and in its true historical setting. Within the framework of this study of the Ethics are woven interpretations of relevant passages from the other writings of Spinoza.

Harvard University Press takes pride in publishing the third edition of a work whose depth, scope, and wisdom have gained it international recognition as a classic in its field. Harry Austryn Wolfson, world-renowned scholar and most lucid of scholarly writers, here presents in ordered detail his long-awaited study of the philosophic principles and reasoning by which the Fathers of the Church sought to explain the mysteries of the Trinity and the Incarnation.

Professor Wolfson first discusses the problem of the relation of faith and reason. Starting with Paul, who, differentiating between the wisdom of God and the wisdom of the world, averred that he was not going to adorn his teachings with persuasive arguments based on the wisdom of the world, Professor Wolfson describes the circumstances and influences which nevertheless brought about the introduction of philosophy into matters of faith and analyzes the various attitudes of the Fathers towards philosophy.

The Trinity and the Incarnation are Professor Wolfson’s next concern. He analyzes the various ways in which these topics are presented in the New Testament, and traces the attempts on the part of the Fathers to harmonize these presentations. He shows how the ultimate harmonized formulation of the two doctrines was couched in terms of philosophy; how, as a result of philosophic treatment, there arose with regard to the Trinity the problem of three and one and with regard to the Incarnation the problem of two and one; and how, in their attempts to solve these problems, the Fathers drew upon principles which in philosophy were made use of in the solution of certain aspects of the problem of the one and the many. In the final part of this volume, entitled “The Anathematized,” he deals with Gnosticism and other heresies which arose during the Patristic period with regard to the Trinity and the Incarnation.

Harry Wolfson was renowned throughout the world for the depth, scope, and wisdom of his monumental volumes on the structure and growth of philosophic systems from Plato to Spinoza. It was not only his extraordinary erudition that commanded respect, his awesome mastery of all the primary sources, Greek, Christian, Judaic, and Muslim; it was also his penetrating insight and his original and groundbreaking interpretations.

In this long-awaited volume, on which he worked for twenty years, Wolfson describes the body of doctrine known as the Kalam. Kalam, an Arabic term meaning "speech" and hence "discussion," was applied to early attempts in Islam to adduce philosophic proofs for religious beliefs. It later came to designate a system of religious philosophy which reached its highest point in the eleventh century; the masters of Kalam, known as Mutakallimum, were in many respects the Muslim equivalent of the Christian Church Fathers. Wolfson studies the Kalam systematically, unfolding its philosophic origins and implications and observing its repercussions in other religions. He scrutinizes the texts of Muslim writers for their treatment of such crucial problems as the attributes of God, the Creation, causality, predestination and free will. In the process he shows how the teachings of the Koran were constantly interwoven with ideas from Greek and Oriental philosophies, Judaism, and Christianity as Islamic thought developed.

As lucidly written and intellectually stimulating as all the author's earlier books, this volume is a fitting capstone to a notable career.

As Harry Austryn Wolfson deftly isolates and analyzes some of the most vital and often the most enigmatic ideas developed by the religious philosophers of the West, a cumulative and thoughtful continuity emerges from his interpretations. Philo, for example, appears as a dominant force throughout the sixteen centuries that preceded Spinoza's critique of his basic principles.

The ten essays which constitute the critical sequence of this penetrating book are derived from lectures, and from separate publications many of which are not readily available now. They include discussions of Immortality and Resurrection in the Philosophy of the Church Fathers; St. Augustine and the Pelagian Controversy; Causality and Freedom in Descartes, Leibniz and Hume. Wolfson concludes with a perceptive distillation of his personal wisdom in an essay contrasting the professed atheist with the “verbal theist.”

In his monumental Philosophy of the Kalam the late Harry Wolfson—truly the most accomplished historian of philosophy in our century—examined the early medieval system of Islamic philosophy. He studies its repercussions in Jewish thought in this companion book—an indispensable work for all students of Jewish and Islamic traditions.

Wolfson believed that ideas are contagious, but that for beliefs to catch on from one tradition to another the recipients must be predisposed, susceptible. Thus he is concerned here not so much with the influence of Islamic ideas as with Jewish elaboration, adaptation, qualification, and criticism of them. To this end he examines passages reflecting Kalam views by a wide variety of Jewish thinkers, including Isaac Israeli, Judah Halevi, Abraham ibn Ezra, and Maimonides. As always in Wolfson's work, two aspects are apparent: the special dimensions of Jewish thought as well as its relation to other traditions. And as always his prose is both graceful and precise.

Readers familiar with the luminous scholarly contributions of Harry Austryn Wolfson will welcome this rich collection of essays that have been previously published in widely dispersed journals and books, The articles range over Aristotle and Plato; Philo; the Church Fathers; and Arabic, Jewish, and Christian philosophers of the Middle Ages: Averroes and Avicenna, Maimonides, and Thomas Aquinas. The twenty-eight pieces are arranged in such a manner that ideas develop and are pursued from one article to the next, forming a coherent whole. According to the editors, "This volume reflects the most basic biographical fact about Wolfson: his life has been one of unflagging commitment, uninterrupted creativity, and truly remarkable achievement...Wolfson's scholarship will be viewed with awe and admiration and his impact will be durable. He has added new dimensions to philosophical scholarship and illuminated wide areas of religious thought, plotting the terrain, blazing trails, and erecting guideposts for scores of younger scholars."

Readers familiar with the luminous scholarly contributions of Harry Austryn Wolfson will welcome this rich collection of essays that have been previously published in widely dispersed journals and books, The articles range over Aristotle and Plato; Philo; the Church Fathers; and Arabic, Jewish, and Christian philosophers of the Middle Ages: Averroes and Avicenna, Maimonides, and Thomas Aquinas. The twenty-eight pieces are arranged in such a manner that ideas develop and are pursued from one article to the next, forming a coherent whole. According to the editors, "This volume reflects the most basic biographical fact about Wolfson: his life has been one of unflagging commitment, uninterrupted creativity, and truly remarkable achievement...Wolfson's scholarship will be viewed with awe and admiration and his impact will be durable. He has added new dimensions to philosophical scholarship and illuminated wide areas of religious thought, plotting the terrain, blazing trails, and erecting guideposts for scores of younger scholars."