The Tanya is an early work of Hasidic philosophy, by Rabbi Shneur Zalman of Liadi, the founder of Chabad Hasidism, first published in 1796. Its formal title is Likkutei Amarim, but is more commonly known by its opening word, Tanya, which means "it was taught in a beraita". It is composed of five sections that define Hasidic mystical psychology and theology as a handbook for daily spiritual life in Jewish observance.
