Ephraim Kanarfogel is the E. Billi Ivry Professor of Jewish History at Yeshiva University. Among his many publications are the award-winning books Jewish Education and Society in the High Middle Ages (Wayne State University Press, 1992), and Peering through the Lattices: Mystical, Magical, and Pietistic Dimensions in the Tosafist Period (Wayne State University Press, 2000).