In two parts:(1) Shaar HaEmunah, an explanation of the essence of the Mitva of Belief. (2) Shaar HaYichud, an explanation of the mitzva of G-ds Unity, also known as Kuntres HaHisbonenus, Treatise onMeditation.
Special attention is paid to concepts of Passover and the Splitting of the Sea of Reeds. The Lubavitcher Rebbe stated that this work is The Laws of the Festival, on the Festival, a necessary accompaniment to the Passover season. The Rebbe Maharash called it the key to Chasidus.It is also available on the Chabad Library CD-ROM.