Few luminaries in Jewish history, particularly in modern times, have made as lasting and profound a contribution to our spiritual heritage as Rav Shneur Zalman (September 4, 1745 - December 15, 1812). He was a close student of the Maggid of Mezritch, himself a student of the Baal Shem Tov. He was the first of seven Rebbe's to lead Chabad Lubavitch.
Also known as the Baal HaTanya, the name of his most famous work, his writings embrace the entire spectrum of Jewish thought - mysticism, philosophy, psychology, ethics, and law - and represent an expression of nearly unparalleled creative genius.