Rabbi Irving (Yitz) Greenberg is a musmaḥ of Yeshivat Beit Yosef Novardok (Brooklyn) and holds a doctorate from Harvard University. He is a leading Jewish thinker, and has written extensively on Jewish tradition in post-modernity, Jewish theology after the Holocaust and the rebirth of Israel, the new encounter between Judaism and Christianity, the ethics of Jewish power, and issues of religious and cultural pluralism. He has served in the Orthodox rabbinate, academia (history and Jewish studies), and Jewish communal life (President Emeritus, CLAL; Founding President, Steinhardt Foundation), and is the author of numerous books, monographs, and articles.