Kabbalah and the Rupture of Modernity provides a comprehensive intellectual and institutional history of Chabad Hasidism through the Kabbalistic concept of ?im?um. The onset of modernity, Eli Rubin argues, was heralded by this startling idea: existence itself is predicated on a self-inflicted "rupture" in the infinite assertion of divinity. Centuries of theoretical disputations concerning ?im?um ultimately morphed into religious and social schism. These debates confronted the meaning of being and forged the animating ethos of Chabad, the most dynamic movement in modern Judaism. Chabad's distinctive character and self-image, Rubin shows, emerged from its spirited defense of Hasidism's interpretation of ?im?um as an act of love leading to rapturous reunion. This interpretation ignited a literal conflagration, complete with book burnings, denunciations, investigations and arrests. Chabad's subsequent preoccupation with ?im?um was equally significant for questions of legitimacy, authority,