The Hasidic teacher known as the "Sefat Emet," literally "the language of truth," was one of the last great masters of Polish Hasidism. Known to be a mystic but not a kabbalist, the Sefat Emet left behind a rich legacy of insight and theology upon his death in 1905. Professor Arthur Green, one of the leading scholars on Hasidism and modern Jewish theology, has brought together and translated a wide selection of the Sefat Emet's teachings; Green also includes his own commentary on the teachings of the Sefat Emet, and in so doing has achieved a remarkable work of Jewish scholarship, bringing the teachings of this insightful Hasidic master to a wide audience of both traditional and nontraditional Jews.