Kabbalah and the Rupture of Modernity: An Existential History of Chabad Hasidism

Kabbalah and the Rupture of Modernity: An Existential History of Chabad Hasidism (Stanford University Press, 2025), by Eli Rubin

Reviewed by Rabbi Reuven Chaim Klein (Rachack Review)

Eli Rubin’s book Kabbalah and the Rupture of Modernity paints a rich intellectual portrait of the Chabad-Lubavitch movement by intertwining a history of the movement with a theological history of the movement’s core ideas. The historical/biographical element primarily follows the lives of Chabad’s seven rebbes, whose collective lifespans cover two and a half centuries from 1745 to 1994. Rather than adopting a reductionist approach — wherein succession disputes and internal developments are chalked up to economic, social, or personality-driven factors — Rubin foregrounds the subtle theological distinctions that shaped the movement. In this way, the history of people/events converges with the history of ideas. In Rubin’s telling, ideas and individuals evolve in concert, and the tensions between them illuminate deeper spiritual commitments rather than surface-level rivalries.

Rubin shows how each of the various rebbes of Chabad had their own unique area(s) of focus and contribution to Chabad thought, with their writings often in conversation with each other over the generations. These transgenerational theological dialogues span from Chabad’s founding figure Rabbi Shneur Zalman of Liadi (1745–1812), known as the Alter Rebbe or Rashaz, all the way to the movement’s seventh and final Rebbe, Rabbi Menachem Mendel Schneersohn (1902–1994), known as Ramash. Rubin’s narrative shows how developments in Chabad thought were inextricably shaped by the broader historical contexts in which they developed, especially the various sets of the circumstances in which Chabad Hassidim and their leaders found themselves from Czarist Russia to Communist Russia to wartime Poland to postwar America.

A recuring concept discussed throughout the book is the idea of tzimtzum, the Lurianic doctrine that God "contracted" Himself to create space for the world. Rubin tracks the way this concept was interpreted and reinterpreted by Chabad thinkers over the generations. Already in the early 18th century, Italian rabbis like Rabbi Immanuel Chai Ricchi (1688–1743) read tzimtzum literally, while Rabbi Yosef Ergas (1685–1730) maintained it must be understood metaphorically. The idea of tzimtzum looms large in the discourses of Rashaz. This is especially true of Rashaz’s work Likkutei Amarim (colloquially known as Tanya), wherein he emphatically taught that tzimtzum must be understood non-literally, and he preached the idea that God’s presence continues to permeate all of creation such that there is no space that is free of Him. This non-literal view of tzimtzum became a hallmark of Chabad theology.

This interpretation was not without controversy. The Misnagdim (opponents of Hasidism, often derisively called “Snags” by those in the Chabad community), led by the Vilna Gaon (1720–1797), championed a literal reading of tzimtzum, viewing the Chabad position as dangerously close to pantheism — or even heresy, in the manner of Baruch Spinoza. Indeed, Rashaz’s view that God did not actually constrict Himself to create the world heavily suggests that the world must then be a part of God. Contemporary scholars like Rachel Elior have interpreted Tanya as promoting a kind of acosmism — the notion that the world does not exist as an ontological reality independent God. [Curiously, the author does not engage with the recent work of contemporary philosopher Sam Lebens, who actually finds the acosmic view that the world only exists as an idea in God’s mind (what he dubs “Extreme Hasidic Idealism”) quite compelling.]

In pushing back against these criticisms of Rashaz, Rubin follows Elliot Wolfson in distinguishing between Spinoza’s pantheism that represents a secularization of the divine, and Chabad’s “divinization of nature.” In this theological framework, God is indeed everywhere, but human beings must find Him and make His presence more palpable through mitzvah observance and Torah study — acts that induce a sort of effacement whereby one re-enters in rapture with the omnipresent deity (whose absence in the material world is only metaphorical, but not ontological/metaphysical). Performing such “good deeds” dissolve the ego and allow one to reunite with the omnipresent divine (the apotheosis of action). According to this reading, the point of tzimtzum is not a rupture by which God intends to separate Himself from His creation, but it is rather an illusion of Divine concealment that invites human agency and longing for the Divine. The author shows how this theology is not only explicit in later expositors of Tanya (most prominently, Rashaz’s descendants and successors), but can be gleaned from close readings of Rashaz’s works themselves.

Besides for delving into the intricacies of the content of Chabad theology, this book also highlights the different modalities that the various rebbes used to relay and broadcast those ideas to a wider audience: verbal discourses (sichos), transcribed talks (maamarim), glosses and reworkings of earlier Chabad works (hagahos), multipartite discourses (hemshech), epistolatory missives (iggros), and institution-building (i.e., founding Yeshivas and dispatching emissaries). Each rebbe had his own distinctive style and approach to spreading Chabad ideology, whether more inwardly focused or outward-looking, ascetic or worldly, conciliatory or polemical.

Among the more intriguing chapters is Rubin’s discussion of the fifth Rebbe, Rashab (Rabbi Sholom Dovber Schneersohn, 1860–1920), and his reputed encounter with Sigmund Freud in Vienna — a moment that hints at surprising intellectual affinities between Hasidic introspection and psychoanalytic method. Rubin also delves into Kabbalistic ideas such as reshimu (the “trace” of Divine light left behind from before tzimtzum) and the Chabad perspectives on the nature of materialism.

The book culminates with a treatment of Ramash, Rabbi Menachem Mendel Schneerson, the late seventh rebbe, who was both a direct descendant of Rashaz and the son-in-law of his predecessor, the sixth rebbe Rayatz (Rabbi Yosef Yitzchak Schneersohn, 1880–1950). With university training in science and engineering, Ramash was said to have introduced a scientific-like aspect of synthesis to Chabad theology in his efforts to bridge gaps between disparate views. As Rubin shows, Ramash was the first rebbe in the movement to entertain Rabbi Irgas’ literal reading of tzimtzum — not as a repudiation of the traditional Chabad view, but as a complementary perspective that could, after a fashion, be harmonized with Rashaz’s non-literal understanding. In so doing, the Lubavitcher Rebbe sought to resolve centuries-old disputes between Hasidim and Misnagdim. Rubin further contrasts Ramash’s new look at the future redemption with his direct predecessor’s: Ramash focused his Messianic vision by looking towards an idealistic future, whereas the previous rebbe Rayatz sought out a redemptive model by looking back at an idealized past.

While Rubin’s focus is squarely on Chabad, readers should be aware that this is not a survey of Hasidism in general. Foundational ideas from other Hasidic works — such as Noam Elimelech, Kedushas Levi, and Me’or Einayim — are entirely absent from the discussion, but this is consistent with internal Chabad usage, wherein the term “Chassidus” refers exclusively to Chabad teachings. In fact, this book presents Chabad literature as mostly internal, and only very seldomly looking to the broader works of Jewish literature. For instance, the only reference to Jewish Medieval thought in this book is when the fourth rebbe of Chabad Maharash (Rabbi Shmuel Schneersohn, 1834–1882) cited from Ibn Gabbai in the name of R. Azriel of Gerona (in addition to Ramash’s special interest in Maimonides, which is a later, 20th century development in Chabad discourse).

Although Rubin occasionally touches on some of the splinter groups that broke off and rejoined Chabad (like Strashelye and Kopust), he largely sidesteps the more contentious aspects of later Chabad history (such as the anti-Zionist Malachim, the Gur-Aryeh controversy, or the Liozne Rebbe’s claim to succeeding Ramash). Similarly, he refrains from in-depth discussions of external polemics, such as disputes that Ramash had with important non-Hasidic leaders like Rabbi Aharon Kotler or Rabbi Elazar Menachem Shach.

In this, the book largely follows the official historiography of institutional Chabad. This should not come as a surprise because the author himself is personally very much a part of the Chabad community as an insider, besides having earned his academic credentials with a PhD from the department of Hebrew and Jewish Studies at UCL. As befits a person of such dual personality, his sources (as copiously detailed in the book’s endnotes) include both scholarly works from the halls of academia, as well as close readings of classical Chabad works.

This is a dense and intellectually-demanding volume, laden with technical kabbalistic and academic terminology. It is not a light read, and at times the arguments may elude non-specialists. This reviewer freely admits that he did not quite follow all the deep intricacies and nuances discussed. The addition of in-text cross-references or summaries might have helped the reader keep track of the different ideas swirling around, although the index does a decent job of helping the reader find specific points. Overall, this book is a compelling and interesting read that is sure to be a useful resource on Chabad theology in academic circles for years to come.