Conflict and change are fundamental elements of social reality and of the Jewish historical experience. This collection presents the work of a distinguished group of scholars exploring the themes of social, political, religious, intellectual, and institutional movements and change in Jewish history. These scholars demonstrate that social change throughout Jewish life has assumed many different manifestations, and can occur in revolutionary and dramatic ways as well as in more common gradual and evolutionary processes. In the first volume, the essays revolve around two themes: “Mobilizations and Contentious Politics,” and “Social Trends, Communal and Institutional Change.” The second volume is devoted to “Developments in Philosophy, Ideology, and Religious Practice.” Taken together, these two volumes present scholarship rich with both historical and contemporary relevance, of interest to academics and students in Jewish studies and the social sciences, communal leaders and policy makers, and anyone intrigued by the Jewish experience.