The study of Jewish political philosophy is a recently established fi eld in the study of Jewish philosophy. While in older histories of Jewish philosophy there is hardly any discussion of this topic, recent editors of such books have found it useful to add chapters on the topic. Following the pioneering eff orts of Leo Strauss, Ralph Lerner and Daniel Elazar, among others, politicalphilosophy has gained its proper place alongside ethics and metaphysics in the study of the history of Jewish philosophy. This volume is another manifestation of this welcome development. Consisting of selected English-language papers the authors published over the last thirty years, it concentrates on the Medieval and Renaissance periods, from Sa'adiah Gaon in the tenth century to Spinoza in the seventeenth. These were the formative periods in the development of Jewishpolitical philosophy, when Jewish scholars versed in the canonical Jewish sources (biblical and rabbinic) encountered Greek political philosophy, as transmitted by Muslim philosophers such as Alfarabi, Ibn Bajja and Averroes, and adapted it to their Jewish terms of reference. The outcome of this effort was Jewish political philosophy.