Rabbi Yitzchak Ginsburgh is one of the foremost expositors of Kabbalah and Hassidism in our time. He heads Yeshivot and educational centers in Jerusalem, Hebron, and other cities in Israel. He has written over thirty books in Hebrew and English, and lectures widely in Israel and in the Diaspora. Rabbi Ginsburgh was born in S. Louis, Missouri in 1944, received his MA in mathematics from the Belfer Graduate School of Science (NY) in 1965 and made aliyah in the same year. He studied in yeshivot in New York and Jerusalem. He is well known for his clarity in elucidating even the most abstract concepts in Jewish mysticism and relating them to contemporary issues in science, psychology, politics, and the arts.