Rabbi Dr. Donniel Hartman is president of the Shalom Hartman Institute and the author of The Boundaries of Judaism, coeditor of Judaism and the Challenges of Modern Life, and coauthor of Spheres of Jewish Identity. He is the founder of some of the most extensive education, training, and enrichment programs for scholars, educators, rabbis, and religious and lay leaders in Israel and North America, and is a prominent essayist, blogger, and lecturer on issues of Israeli politics and policy, Judaism, and the Jewish community.