The Logic Of Gersonides

In the great libraries of Europe and the United States, hidden in fading manuscripts on forgotten shelves, lie the works of medieval Hebrew logic. From the end of the twelfth century through the Renaissance, Jews wrote and translated commentaries and original compositions in Aristotelian logic. One can say without exaggeration that wherever Jews studied philosophy - Spain, France, Northern Africa, Germany, Palestine - they began their studies with logic. Yet with few exceptions, the manuscripts that were catalogued in the last century have failed to arouse the interest of modem scholars. While the history of logic is now an established sub-discipline of the history of philosophy, the history of Hebrew logic is only in its infancy. The present work contains a translation and commentary of what is arguably the greatest work of Hebrew logic, the Sefer ha-Heqqesh ha-Yashar (The Book of the Correct Syllogism) of Levi ben Gershom (Gersonides; 1288-1344). Gersonides is well known today as a philosopher, astronomer, mathematician, and biblical exegete. But in the Middle Ages he was also famous for his prowess as a logician. The Correct Syllogism is his attempt to construct a theory of the syllogism that is free of what he considers to be the 'mistakes' of Aristotle, as interpreted by the Moslem commentator A verroes. It is an absorbing, challenging work, first written by Gersonides when he was merely thirty-one years old, then significantly revised by him. The translation presented here is of the revised version.

Gersonides—Rabbi Levi ben Gershom (Provence, 1288–1344)—was a multifaceted thinker. Endowed with his original and critical mind, he did not accept the authority of his predecessors but investigated every matter for himself. His extraordinary attention to method—both of inquiry and of writing—stands out clearly in his own work and in his reading of certain biblical books. The eight articles on Gersonides’ thought and method collected in this volume address four main topics: Gersonides’ methods of inquiry and composition; the use of introductions in his own works and in biblical books; his method in the supercommentaries on Averroes; and his methods of biblical exegesis. "Klein-Braslavi's (sic) book...is highly recommended for all libraries that take seriously philosophy, the life of the mind and cognition." David B. Levy, Touro College

Gersonides’ Afterlife is the first full-scale treatment of the reception of one of the greatest scientific minds of medieval Judaism: the philosopher-scientist Levi ben Gershom (1288–1344). The papers collected here describe his multifarious impact from the fourteenth century to present-day religious Zionism.

R. Levi ben Gershom (Gersonides, 1288-1344) is one of the greatest and most original figures of Medieval Jewish thought. He wrote numerous works in philosophy, science and biblical exegesis. Some of his scientific works, most notably his highly innovative Astronomy, were translated from Hebrew into Latin and could thus reach non-Jewish scholars. The twelve studies collected in this bilingual volume (English and French in equal parts) offer for the first time a comprehensive overview and assessment of Gersonides' work in astronomy, mathematics, logic, natural science, and psychology. Gersonides' contributions are analyzed within the context of contemporary philosophy and science in Hebrew, Arabic, and Latin. New light is also shed on the reception of Gersonides' work within European science. The volume includes a very extensive bibliography of writings by and about Gersonides. From the contents: Part I: Gersonides' Astronomy: Bernard R. Goldstein, José Luis Mancha, José Chabas, Henri Hugonnard-Roche, Guy Beaujouan. Part II: Gersonides' Work in Mathematics: Tony Lévy, Karine Chemla, Serge Pahaut. Part III: Gersonides' Science in Its Relations to His Philosophy and Theology: Herbert A. Davidson, Tzvi Y. Langermann, Charles H. Manekin, Amos Funkenstein, Gad Freudenthal.