Rabbi Shaul Shimon Deutsch, the Liozna Rebbe (born 1966), is a rabbi and author from New York City. He wrote and self-published a biography of the Chabad-Lubavitcher Rebbe, Rabbi Menachem Mendel Schneerson entitled Larger than Life, which proved extremely controversial in Chabad circles. The multi-volume work disputed the notion that Schneerson was the Jewish Messiah, and was outlawed within the Chabad community following its publication in 1995.He founded and curates the Living Torah Museum in Brooklyn, New York.