Quick Answer: Ein Sof (Hebrew: "without end") is the Kabbalistic term for God's infinite essence before any act of creation or self-revelation. It is not a name for God but a recognition that God's deepest reality exceeds all names, attributes, and descriptions. The ten Sephiroth of the Tree of Life are the emanations through which Ein Sof becomes knowable, while Ein Sof itself remains permanently beyond the reach of human thought, language, or experience.
Last updated: March 2026
Key Takeaways
- Ein Sof means "without end" and designates the infinite, unknowable essence of God that precedes all attributes, names, and manifestations.
- The concept was systematized by Azriel of Gerona (c. 1160-1238) and became central to the Zohar and all subsequent Kabbalistic thought.
- The ten Sephiroth emanate from Ein Sof as the means by which the infinite becomes manifest, while Ein Sof itself remains unchanged and unreachable.
- Isaac Luria's Tzimtzum doctrine explains how Ein Sof contracted itself to create space for the finite world, resolving the tension between infinite God and finite creation.
- Ein Sof belongs to a broader tradition of negative theology (apophatic thought) that includes Neoplatonism, Pseudo-Dionysius, and Meister Eckhart, all of which insist that the ultimate reality cannot be captured by any positive statement.
The Meaning of Ein Sof
Ein Sof is composed of two Hebrew words: ein (nothing, or without) and sof (end, limit, boundary). Together they mean "without end" or, more precisely, "there is no end." The term is not a name. It is a refusal of naming. It says that whatever God ultimately is, that reality has no boundary, no limit, no definition that could contain it.
This distinction between Ein Sof and God's names is theologically precise. The Torah gives God many names: YHVH, Elohim, El Shaddai, Adonai. Each name corresponds to a specific mode of divine activity. YHVH relates to mercy. Elohim relates to judgment. These names describe God as God acts in relation to creation. Ein Sof designates what God is before any relation, before any activity, before any self-disclosure. It is the divine essence in its absolute hiddenness.
The concept creates a productive paradox at the heart of Kabbalistic theology. On one hand, Jewish tradition insists on a personal God who speaks, commands, loves, and judges. On the other hand, Ein Sof is utterly impersonal, beyond all predicates, including the predicate "personal." The Sephiroth serve as the bridge between these two aspects: they are the personal God of Torah and prayer, emanated from the impersonal depth of Ein Sof.
Language at Its Limit
Every statement about Ein Sof is technically false, because every statement attributes something to what has no attributes. To say "Ein Sof is infinite" is already a limitation, since it defines Ein Sof by the concept of infinity. The Kabbalists understood this. Their solution was not silence but a disciplined use of negative language: Ein Sof is not this, not that, not anything that can be conceived. This via negativa (way of negation) is itself a spiritual practice, training the mind to release its grip on concepts and rest in unknowing.
Historical Emergence: From the Bahir to Azriel
The concept of Ein Sof did not appear suddenly. It emerged gradually from the convergence of several streams: biblical theology, rabbinic speculation, Neoplatonic philosophy, and the earliest Kabbalistic texts.
The Sefer ha-Bahir (Book of Brightness), which appeared in Provence around 1176 and is the earliest Kabbalistic text, does not use the term Ein Sof but contains the conceptual seeds. The Bahir speaks of a primordial divine thought or point from which all emanation proceeds, and it hints at a reality beyond even this first point that cannot be described.
Isaac the Blind (c. 1160-1235), the pioneering Kabbalist of Provence, moved closer to the concept by distinguishing between the "Cause of causes" (the hidden root of all reality) and the Sephiroth that emerge from it. His student Azriel of Gerona (c. 1160-1238) gave the concept its mature formulation. In his Commentary on the Ten Sephiroth and other works, Azriel established Ein Sof as a technical term for the infinite divine essence and worked out its relationship to the Sephiroth in systematic detail.
| Figure | Period | Contribution to Ein Sof Concept |
|---|---|---|
| Sefer ha-Bahir | c. 1176 | Earliest hints of a reality beyond the first Sephirah |
| Isaac the Blind | c. 1160-1235 | Distinguished "Cause of causes" from emanated Sephiroth |
| Azriel of Gerona | c. 1160-1238 | Systematized Ein Sof as technical term, defined relation to Sephiroth |
| Moses de Leon / Zohar | c. 1280-1286 | Elaborated Ein Sof through symbolic narrative and mythic imagery |
| Isaac Luria | 1534-1572 | Tzimtzum doctrine: Ein Sof contracts to create space for world |
Azriel argued that Ein Sof is the "perfect unity that has no deficiency." It is not composed of parts. It does not change. It cannot be grasped by thought. The Sephiroth emerge from it through emanation, but this emergence does not diminish Ein Sof, just as a flame that lights other flames is not diminished. This analogy, borrowed from Neoplatonic philosophy, became a standard way of expressing the Ein Sof-Sephiroth relationship.
The Geronese Kabbalists faced an immediate challenge: if Ein Sof is beyond all attributes, how can it produce the Sephiroth, which are specific attributes? Azriel's answer was that Ein Sof contains all possibilities in an undifferentiated unity. The Sephiroth are not additions to Ein Sof but differentiations of what was already implicit within it. Creation is not the production of something new but the unfolding of what was always already present in the infinite.
Ein Sof and the Sephiroth
The relationship between Ein Sof and the ten Sephiroth is the central structural problem of Kabbalistic theology. The Sephiroth are the divine attributes or emanations that form the Tree of Life, the map of divine reality that is the most recognizable symbol of Kabbalah. They are, from top to bottom: Keter (Crown), Chokhmah (Wisdom), Binah (Understanding), Chesed (Lovingkindness), Gevurah (Strength/Judgment), Tiferet (Beauty/Harmony), Netzach (Eternity/Victory), Hod (Splendor), Yesod (Foundation), and Malkuth (Kingdom).
Ein Sof is not one of the Sephiroth. It is the hidden source from which the entire Sephirotic system emanates. Some texts place Ein Sof "above" Keter, the highest Sephirah. Others identify Ein Sof with the innermost, most hidden aspect of Keter itself. The ambiguity is deliberate. The transition from Ein Sof to Keter marks the point where the absolutely unknowable begins to become knowable, and that transition is itself beyond comprehension.
The Three Veils of Negative Existence
Some Kabbalistic systems describe three stages of negativity "above" Keter: Ein (Nothing), Ein Sof (Without End), and Ein Sof Or (Limitless Light). These are not additional Sephiroth but three ways of pointing to the unknowable source. Ein is the absolute nothing that precedes all being. Ein Sof is the boundlessness that has no limit. Ein Sof Or is the first stirring of manifestation, the light that will become the Sephiroth. These three "veils" map the transition from absolute hiddenness to the first glimmer of self-revelation.
The Sephiroth are sometimes described as "garments" of Ein Sof, vessels that contain and transmit the infinite light in specific, differentiated forms. Without the Sephiroth, Ein Sof would be entirely inaccessible. With them, the infinite becomes perceptible in the forms of wisdom, mercy, judgment, beauty, and all the other divine qualities. The human being, created in the image of God, reflects the Sephirotic structure and can therefore participate in the divine life through prayer, study, and ethical action.
This arrangement solves a theological problem that troubled both Jewish and Christian thinkers: how can an infinite, unchanging, utterly transcendent God interact with a finite, changing, material world? The answer is that God does not interact directly. The interaction happens through the Sephiroth, which serve as a graduated series of mediations between infinite source and finite creation.
Ein Sof in the Zohar
The Zohar (Book of Splendor), composed primarily by Moses de Leon in Castile around 1280-1286, is the central text of Kabbalah. Its treatment of Ein Sof is rich, allusive, and often deliberately obscure. The Zohar does not define Ein Sof in philosophical terms but evokes it through poetic language, mythic imagery, and narrative.
The Zohar calls Ein Sof the "hidden of the hidden" (setimah de-kol setimin), the "thought that has no end" (mahshavah she-ein lah sof), and the "root of all roots." It speaks of Ein Sof as utterly beyond knowledge: "Before He created any shape in the world, before He produced any form, He was alone, without form and without resemblance to anything. Who then can comprehend Him as He is before creation, since He has no form?"
The Zohar's most extended discussions of Ein Sof appear in the Idrot (Assemblies), particularly the Idra Rabba (Great Assembly) and Idra Zuta (Small Assembly). These sections describe the divine face (partzuf) in elaborate detail, but they frame this description with the insistence that behind all descriptions lies Ein Sof, which no description can reach.
The Zohar's Paradox
The Zohar is a text of extraordinary verbal richness, filled with images, stories, and symbolic descriptions. Yet at its center is the insistence that the ultimate reality cannot be described at all. This tension between speech and silence, between the richness of Sephirotic symbolism and the emptiness of Ein Sof, is what gives the Zohar its characteristic energy. It speaks endlessly about what cannot be spoken, and this very contradiction is the engine of mystical insight.
Tzimtzum: How the Infinite Makes Room for the Finite
The concept of Ein Sof reaches its most dramatic development in the Kabbalah of Isaac Luria (1534-1572), known as the Ari, who taught in Safed, in Ottoman Palestine. Luria's most original contribution was the doctrine of Tzimtzum (contraction or withdrawal), which directly addresses the relationship between Ein Sof and creation.
The problem is simple to state: if Ein Sof fills all reality, where is there room for a world? If the infinite is truly infinite, it leaves no space for anything finite to exist. Luria's radical answer was that the first act of creation was not an outward expansion but an inward contraction. Ein Sof withdrew into itself, creating an empty space (tehiru or halal) within which the finite world could come into being.
After the contraction, a ray of the Or Ein Sof (the Light of the Infinite) entered the empty space through a narrow channel (kav). This light formed itself into vessels (kelim), which were to contain and structure the divine energy. But the vessels of the lower Sephiroth could not contain the intensity of the light. They shattered. This is the shevirat ha-kelim (breaking of the vessels), and it scattered divine sparks (nitzotzot) throughout all levels of reality, trapping fragments of holy light in the shells (kelipot) of material existence.
| Lurianic Stage | Hebrew Term | Description |
|---|---|---|
| Contraction | Tzimtzum | Ein Sof withdraws to create empty space for creation |
| Light enters | Kav | A ray of Or Ein Sof penetrates the empty space |
| Vessel formation | Kelim | Light shapes itself into vessels to structure reality |
| Shattering | Shevirat ha-kelim | Lower vessels break, scattering holy sparks |
| Repair | Tikkun | Human action gathers sparks and restores divine unity |
The human task, in Lurianic Kabbalah, is tikkun (repair): gathering the scattered sparks and restoring them to their source. Every mitzvah (commandment), every act of prayer, every ethical deed has cosmic significance because it participates in the repair of the shattered vessels and the return of exiled light to Ein Sof. The individual human life becomes an instrument of cosmic restoration.
The question of whether Tzimtzum should be understood literally (Ein Sof actually withdrew) or metaphorically (Tzimtzum describes the process from the perspective of creation, not from the perspective of Ein Sof) has been debated for centuries. The Hasidic master Shneur Zalman of Liadi (1745-1812), founder of Chabad, argued that Tzimtzum is not literal: Ein Sof did not actually withdraw but merely concealed its presence, the way a teacher might hide knowledge to allow a student to grow.
Or Ein Sof: The Light of the Infinite
The Or Ein Sof (Light of the Infinite) is the medium through which the hidden Ein Sof becomes manifest. It is not light in the physical sense but the primary mode of divine self-expression. Before Tzimtzum, the Or Ein Sof filled all reality uniformly, with no differentiation or form. The process of creation involves the progressive concealment, filtering, and channeling of this light into specific forms and vessels.
The concept of Or Ein Sof allows the Kabbalists to maintain the absolute transcendence of Ein Sof while also affirming that divine energy permeates all creation. Ein Sof itself does not enter the world. Its light does. And that light, filtered through the Sephiroth and the four worlds (Atzilut, Beriah, Yetzirah, Asiyah), becomes progressively dimmer and more concealed until it appears as the ordinary material world of everyday experience.
Hidden in Plain Sight
The Kabbalistic understanding of the physical world follows from the Ein Sof doctrine. The material world is not separate from God. It is the most concealed form of divine light. Every physical object, every animal, every rock, every human being contains sparks of the Or Ein Sof, buried beneath layers of concealment. The difference between the spiritual and the material is not a difference of substance but a difference of concealment. Matter is hidden spirit. Spirit is revealed matter.
Ein Sof and Negative Theology
Ein Sof belongs to a tradition of negative theology (apophatic theology) that spans multiple religious and philosophical traditions. Negative theology holds that the ultimate reality can be described only by what it is not, never by what it is. Every positive statement about God is a limitation, because it defines God by a specific attribute and thereby excludes its opposite.
In the Jewish tradition, negative theology appears as early as Maimonides (1138-1204), who argued in The Guide of the Perplexed that God's attributes in the Torah must be understood negatively: to say "God is powerful" really means "God is not weak," and even this is inadequate because it applies a human category to a non-human reality. The Kabbalists radicalized Maimonides' negative theology by creating Ein Sof as a technical concept for the God beyond all attributes, positive or negative.
The parallels with other traditions are striking. Plotinus's One, the apex of Neoplatonic philosophy, is beyond being, beyond thought, and beyond language, exactly like Ein Sof. Hermes Trismegistus described the divine source as "invisible, infinite, eternal, ungenerated," using the same strategy of negative terms. Pseudo-Dionysius the Areopagite, the Christian mystic whose writings profoundly influenced medieval theology, called God "beyond all affirmation and all denial." Meister Eckhart spoke of the "Godhead" (Gottheit) beyond "God" (Gott), a distinction that maps directly onto the Ein Sof / Sephiroth distinction.
A Shared Insight, Not a Borrowed Concept: The parallel between Ein Sof and Neoplatonic concepts does not necessarily mean that the Kabbalists borrowed from Plotinus (though Neoplatonic texts did circulate in medieval Jewish intellectual circles). It may indicate that contemplative practice in multiple traditions independently arrives at the same insight: that the ultimate reality exceeds all conceptual frameworks, including the framework of negative theology itself.
Philosophical Parallels: Neoplatonism, Meister Eckhart, and Beyond
The relationship between Ein Sof and Neoplatonic philosophy deserves detailed attention, because it illuminates what is distinctive about the Kabbalistic concept. Plotinus (204-270 CE) described reality as emanating from the One, which is beyond being and beyond thought. The One produces Nous (Intellect), which produces Psyche (Soul), which produces the material world. Each level is a diminished reflection of the one above it.
The structural similarity to the Kabbalistic system is obvious: Ein Sof (like the One) produces the Sephiroth (like the hypostases) through a process of emanation that does not diminish the source. Historical influence is possible: Neoplatonic texts, particularly the Theology of Aristotle (actually excerpts from Plotinus' Enneads) and the works of Proclus, circulated in Arabic and Hebrew translations in the medieval Islamic world, where Jewish thinkers had access to them.
But the differences are equally important. The Neoplatonic One has no will, no personality, no intention. It emanates reality the way the sun emits light: naturally and necessarily. Ein Sof, despite being beyond all attributes, exists within a monotheistic framework where God's creation is an act of will, not a necessary process. The Kabbalists maintained the paradox: Ein Sof is beyond will and personality, yet the creation that flows from it is willed and purposeful.
Meister Eckhart (c. 1260-1328), the German Dominican mystic, developed a distinction between Gott (God as creator, trinity, and object of worship) and Gottheit (Godhead, the divine essence beyond all distinctions). This maps remarkably onto the Kabbalistic distinction between the Sephiroth (the God of religious experience) and Ein Sof (the divine reality beyond all experience). Whether Eckhart was influenced by Kabbalah directly is debated, but the structural parallel suggests a common mystical logic at work.
For those interested in these cross-traditional connections, the Hermetic Synthesis Course examines how different mystical traditions arrive at similar insights through different paths.
Ein Sof and the Problem of Evil
If Ein Sof is the infinite source of all reality, and Ein Sof is perfectly good (or beyond good and evil), how does evil arise? This theodicy question takes a distinctive form in Kabbalistic thought.
The Zohar locates the origin of evil in the Sephirotic system itself, specifically in the separation of Gevurah (Judgment, Severity) from Chesed (Mercy, Lovingkindness). When divine judgment operates without the tempering influence of mercy, it becomes the "Other Side" (Sitra Achra), the realm of impurity and evil. Evil, in this understanding, is not a separate principle opposing God but a distortion within the divine system itself, a case of a necessary quality (judgment) becoming destructive when it loses its balance with its counterpart (mercy).
Lurianic Kabbalah provides a different and more dramatic answer. Evil arises from the breaking of the vessels (shevirat ha-kelim). When the divine light shattered its containers, fragments of light became trapped in shells of opacity (kelipot). These kelipot are not pure evil in themselves. They serve a function: they conceal the divine light, creating the conditions for free will and moral choice. But when they become autonomous, when they claim independent existence apart from the divine light they contain, they become the source of evil, suffering, and spiritual darkness.
Reframing Evil Through Ein Sof
The Kabbalistic approach to evil is neither denial nor dualism. It does not say evil is an illusion (as some Eastern traditions hold) or that evil is a separate power opposing God (as Manichaeism holds). It says that evil is a distortion of the good, a misplacement of divine energy, and that human beings have the capacity and the responsibility to repair this distortion through conscious action. Every time you choose good over evil, you are participating in tikkun, the restoration of scattered sparks to their source in Ein Sof.
Hasidic Interpretations of Ein Sof
The Hasidic movement, founded by the Baal Shem Tov (Israel ben Eliezer, c. 1698-1760) in 18th-century Eastern Europe, democratized Kabbalistic ideas and made them accessible to ordinary Jews. The Hasidic interpretation of Ein Sof emphasized the divine presence in all things (panentheism) and the possibility of connecting with Ein Sof through joyful worship, prayer, and everyday activities.
The Baal Shem Tov taught that Ein Sof is not remote and inaccessible but immanent in every moment and every creature. The divine sparks scattered through creation are everywhere, waiting to be raised through conscious attention and devotion. A simple Jew saying a prayer with full intention (kavanah) could connect with Ein Sof as effectively as a scholarly Kabbalist performing complex meditative visualizations.
Shneur Zalman of Liadi (1745-1812), the founder of Chabad Hasidism, produced the most philosophically rigorous Hasidic interpretation of Ein Sof in his Tanya (1797). Shneur Zalman argued that from the perspective of Ein Sof, the world does not exist at all. The world appears to exist only from the perspective of the creatures within it. From the divine perspective, there is nothing but Ein Sof. This radical position, sometimes called acosmism (the denial of the world's independent reality), pushed the Ein Sof doctrine to its logical extreme.
Gershom Scholem's Analysis
Gershom Scholem (1897-1982), who single-handedly established the academic study of Kabbalah as a legitimate scholarly discipline, devoted extensive attention to the concept of Ein Sof. In Major Trends in Jewish Mysticism (1941), Kabbalah (1974), and numerous articles, Scholem traced the historical development of the concept and analyzed its theological implications.
Scholem argued that Ein Sof represents the point where Jewish mysticism confronts the same problem that all mysticism confronts: the inadequacy of language to express ultimate reality. He saw the development of the Ein Sof concept as a creative response to this problem, one that preserved both the transcendence of God (Ein Sof is beyond all description) and the personality of God (the Sephiroth are the God of covenant and commandment).
Scholem also emphasized the tension inherent in the concept. The God of the Torah speaks, acts, and enters into relationship. Ein Sof does none of these things. The Kabbalists managed this tension through the Sephirotic system, but the tension never fully resolves. It remains as a productive ambiguity at the heart of Jewish mystical theology, generating new interpretations in every generation.
Contemplating Ein Sof
Traditional Kabbalistic meditation includes practices for approaching the boundary between the knowable (Sephiroth) and the unknowable (Ein Sof). These practices typically involve systematic contemplation of the Sephiroth in ascending order, beginning with Malkuth (the most accessible) and moving upward toward Keter (the threshold of Ein Sof).
The Kabbalist Abraham Abulafia (1240-1291) developed techniques of letter combination and divine name meditation designed to dissolve the ordinary structures of thought and open the mind to direct apprehension of the infinite. Abulafia described the goal as "untying the knots" that bind consciousness to specific forms and concepts, allowing the meditator to approach the formless reality of Ein Sof.
A Contemplative Exercise
Consider any quality or attribute of God: wisdom, mercy, power, beauty. Hold that quality in your mind and then ask: is this quality the whole of God? If not, what is God beyond this quality? And what is God beyond that? Follow the chain of negation until the mind arrives at the point where no concept remains. The emptiness that appears is not nothing. It is the mind's encounter with its own limit, the point where conceptual thought gives way to a reality it cannot grasp. The Kabbalists called this reality Ein Sof.
These practices are traditionally undertaken within the framework of Torah study, prayer, and the observance of mitzvot. Kabbalistic tradition warns against approaching Ein Sof meditation without proper grounding in the ethical and ritual dimensions of Jewish life. The story of the four sages who entered the Pardes (orchard of mystical contemplation), of whom only Rabbi Akiva emerged unharmed, serves as a cautionary tale about the dangers of contemplating ultimate reality without adequate preparation.
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Frequently Asked Questions
What does Ein Sof mean?
Ein Sof is a Hebrew term meaning "without end" or "the infinite." In Kabbalistic theology, it refers to God as God truly is before any act of self-revelation, creation, or limitation. Ein Sof is not a name for God but a designation for the aspect of the divine that is utterly beyond human comprehension, language, or thought.
Is Ein Sof the same as God?
Ein Sof is God in God's ultimate, unknowable essence. The God who creates the world, gives the Torah, and interacts with Israel is God as manifested through the Sephiroth. Ein Sof is what remains when you strip away all attributes, all names, all descriptions. It is not a different being from God but the hidden depth of God that no creature can access directly.
Who first used the term Ein Sof?
The term appears in the writings of Azriel of Gerona (c. 1160-1238), a student of Isaac the Blind, though related concepts appear in the Bahir (12th century) and earlier mystical texts. Azriel systematized the relationship between Ein Sof and the Sephiroth, arguing that Ein Sof is the hidden root from which the Sephiroth emanate without diminishing the source.
What is the relationship between Ein Sof and the Sephiroth?
The ten Sephiroth are the attributes or emanations through which Ein Sof manifests and becomes knowable. Ein Sof itself has no attributes. The Sephiroth emerge from Ein Sof through a process of emanation, each one revealing a different aspect of divine reality while Ein Sof remains hidden and unchanged.
How does Tzimtzum relate to Ein Sof?
Tzimtzum, developed by Isaac Luria (1534-1572), describes how Ein Sof contracted or withdrew into itself to create a space in which the finite world could exist. Without this self-limitation, the infinite light of Ein Sof would overwhelm all existence.
Can Ein Sof be experienced?
Kabbalistic tradition generally holds that Ein Sof cannot be experienced directly, since any experience requires a subject-object relationship and Ein Sof transcends all relationships. However, through meditation, study, prayer, and ethical action, the Kabbalist can ascend through the levels of divine manifestation and approach the threshold where the Sephiroth dissolve into their infinite source.
How does Ein Sof differ from the Neoplatonic One?
Both concepts point to an ultimate reality beyond all predicates. The Neoplatonic One generates reality through emanation without diminishing itself. The key difference is that Ein Sof exists within a monotheistic framework with a personal God who gives commandments and enters into covenant, while the Neoplatonic One is impersonal.
What did Gershom Scholem say about Ein Sof?
Scholem analyzed Ein Sof as the point where Jewish mysticism confronts the limits of language and thought. He traced the development of the concept from early Kabbalistic circles through the Zohar and Lurianic Kabbalah, showing how it addressed the fundamental theological problem of how an infinite God relates to a finite world.
Is Ein Sof mentioned in the Zohar?
Yes. The Zohar uses Ein Sof extensively, describing it as the "hidden of the hidden," the source that cannot be grasped by thought. It develops the relationship between Ein Sof and the Sephiroth through elaborate symbolic narratives.
How does Ein Sof relate to the problem of evil?
Kabbalistic answers vary. The Zohar locates evil in an imbalance within the Sephiroth. Lurianic Kabbalah traces evil to the breaking of the vessels during creation, which scattered holy sparks into the realm of impurity. In both cases, evil is a distortion of divine energy, not a separate principle opposing God.
What is the Or Ein Sof?
Or Ein Sof means "the light of the Infinite." It is the divine light that emanates from Ein Sof and fills all reality. In Lurianic Kabbalah, the Or Ein Sof is the primordial light that existed before Tzimtzum. After the contraction, a ray of this light entered the empty space to begin the process of creation.
Sources
- Scholem, Gershom. Major Trends in Jewish Mysticism. Schocken Books, 1941.
- Scholem, Gershom. Kabbalah. Meridian/Penguin, 1978.
- Matt, Daniel C. (trans.) The Zohar: Pritzker Edition, Vols. 1-12. Stanford University Press, 2004-2017.
- Fine, Lawrence. Physician of the Soul, Healer of the Cosmos: Isaac Luria and His Kabbalistic Fellowship. Stanford University Press, 2003.
- Idel, Moshe. Kabbalah: New Perspectives. Yale University Press, 1988.
- Tishby, Isaiah. The Wisdom of the Zohar, 3 vols. Littman Library, 1989.
Ein Sof is not an idea to be grasped but a limit to be acknowledged. Every concept you have of God, of the infinite, of ultimate reality, is a Sephirah, a vessel containing a measure of the immeasurable. The vessel is real. The light within it is real. But the source from which both vessel and light emerge is beyond your reach, and recognizing this is not a failure of knowledge but the beginning of wisdom. Let your concepts do their work and then release them. What remains when all concepts dissolve is not nothing. It is what the Kabbalists called Ein Sof, and it was there before you began thinking and will be there after you stop.