Central Problem

Twentieth-century Jewish philosophy (or “neo-Hebraic thought”) addresses the fundamental question of how to philosophize in a manner that respects the concrete existence of the individual, the reality of death and time, and the primacy of ethical relations—all while drawing upon the Jewish religious and cultural tradition. This movement emerged as a deliberate alternative to the totalizing tendencies of Western philosophy, which, from the pre-Socratics to German Idealism, has attempted to subsume all particularity within universal categories, thereby negating the irreducible singularity of the existing individual.

The central tension lies between the philosophical tradition’s aspiration to comprehend reality as a totality (the “Whole” or “All”) and the Jewish religious emphasis on the absolute transcendence of God, the contingency of the world, and the human being as God’s partner in an ongoing dialogue. Traditional philosophy, born from the fear of death, attempts to overcome this fear by dissolving the individual into the universal—“only what is singular can die, and everything mortal is alone.” Neo-Hebraic thinkers reject this consolation as false, insisting instead on confronting mortality, temporality, and the concrete ethical demands of the neighbor.

The Holocaust’s catastrophic destruction of European Jewry intensified these concerns, as Levinas suggests that Western philosophy’s “imperialism of the Same” and rejection of the Other provided conceptual matrices for such violence against alterity.

Main Thesis

The neo-Hebraic philosophers propose that authentic philosophy must abandon totalizing ontology in favor of a “new thinking” that prioritizes dialogue, relation, and ethical responsibility toward the Other.

Rosenzweig argues that philosophy must reject idealistic-pantheistic totalities and recognize three irreducible elements of experience: God, the World, and the Human Being. These are connected through creation (God-World), revelation (God-Human), and redemption (Human-World). Theological concepts become “ontological categories,” making religion the structure and truth of being itself. Truth requires not mere knowledge but testimony—living witness through ethical-religious commitment.

Buber develops a “relational personalism” or “dialogical philosophy” centered on two fundamental word-pairs (Grundworte): I-Thou (Ich-Du) and I-It (Ich-Es). The I-It represents impersonal, instrumental, superficial relations with otherness; the I-Thou represents personal, disinterested, profound relations. The authentic I (the person) constitutes itself only through genuine relation with others: “the I becomes I only in the Thou.” The I-Thou relation finds its highest manifestation in the relationship with the eternal Thou (God), who is not an object of theology but a living presence addressed in dialogue. God has not died but has been “eclipsed” by modernity’s I-It domination—and may return.

Levinas radicalizes this critique, accusing Western philosophy of “imperialism of the Same” and “ontological violence”—reducing the Other to categories of the Same. The escape from this totalizing ontology occurs not through theory but through the ethical encounter with the face (visage) of the Other. The face presents itself as absolutely transcendent, bearing in itself the commandment “Thou shalt not kill.” The face makes me responsible—infinitely responsible, even for the Other’s responsibility. Ethics is not a branch of philosophy but “first philosophy” itself: metaphysics = ethics = religion.

Historical Context

The encounter between Judaism and philosophy in the twentieth century had precursors in the late work of neo-Kantian Cohen (1842-1918), but achieved its distinctive expression in Rosenzweig, Buber, and Levinas. Jewish philosophy throughout history, influenced by Greek-Hellenistic, Arabic, and modern sources as well as the esoteric mystical tradition of the Kabbalah, was characterized by: the affirmation of God’s absolute unity and transcendence; the contingency and relative autonomy of the world; the human being as God’s partner; and history as the interweaving of divine will and human freedom.

Rosenzweig experienced a decisive religious crisis in 1913, planning to convert to Christianity but ultimately rediscovering Judaism. His major work, The Star of Redemption (1921), was written during World War I and completed while he suffered from a progressive paralytic illness that left him communicating only by indicating letters to his wife. He died in 1929 at age 43.

Buber (1878-1965) studied with Simmel and Dilthey, joined the Zionist movement, and after losing his professorship under Nazism emigrated to Jerusalem in 1938, where he advocated peaceful coexistence between Arabs and Jews. His philosophy drew on his studies of Hasidism, the Eastern European Jewish movement emphasizing action.

Levinas (1905-1995), born in Lithuania, studied with Husserl and Heidegger in Freiburg and was among the first to introduce phenomenology to France. Imprisoned in a concentration camp during World War II, his philosophical development was profoundly shaped by the Holocaust’s demonstration of what the refusal of the Other can produce.

Philosophical Lineage

flowchart TD
    Cohen --> Rosenzweig
    Kierkegaard --> Rosenzweig
    Kierkegaard --> Buber
    Dilthey --> Buber
    Simmel --> Buber
    Rosenzweig --> Levinas
    Buber --> Levinas
    Husserl --> Levinas
    Heidegger --> Levinas
    Feuerbach --> Buber
    Hasidism --> Buber

    class Cohen,Rosenzweig,Buber,Levinas,Kierkegaard,Dilthey,Simmel,Husserl,Heidegger,Feuerbach,Hasidism internal-link;

Key Thinkers

ThinkerDatesMovementMain WorkCore Concept
Cohen1842-1918Neo-KantianismReligion of ReasonEthical monotheism
Rosenzweig1886-1929Neo-Hebraic PhilosophyThe Star of RedemptionNew thinking, creation-revelation-redemption
Buber1878-1965Dialogical PhilosophyI and ThouI-Thou relation, eternal Thou
Levinas1905-1995PhenomenologyTotality and InfinityFace, responsibility, alterity

Key Concepts

ConceptDefinitionRelated to
New ThinkingPhilosophy faithful to experience, uniting philosophy and theology, against totalizing systemsRosenzweig, Neo-Hebraic Philosophy
I-Thou (Ich-Du)Word-pair designating personal, disinterested, profound relations with alterityBuber, Dialogical Philosophy
I-It (Ich-Es)Word-pair designating impersonal, instrumental, superficial relations with alterityBuber, Dialogical Philosophy
Eternal ThouGod as living presence addressed in dialogue, not theological objectBuber, Philosophy-of-Religion
Eclipse of GodGod’s temporary concealment due to the dominance of I-It relations in modernityBuber, Philosophy-of-Religion
Face (Visage)The mode in which the Other presents itself, bearing absolute transcendence and ethical commandLevinas, Ethics
TotalityImmanent, englobing being of traditional ontology that reduces alterity to samenessLevinas, Phenomenology
InfinityTranscendent reality of the absolutely Other, revealed through the faceLevinas, Ethics
ResponsibilityOriginal structure of subjectivity constituted through being-for-the-OtherLevinas, Ethics
Star of RedemptionSymbol of the interconnection of God, World, Human through creation, revelation, redemptionRosenzweig, Neo-Hebraic Philosophy

Authors Comparison

ThemeRosenzweigBuberLevinas
Central problemPhilosophy’s denial of death and singularityLoss of authentic relation in modernityWestern philosophy’s violence against alterity
Key conceptNew thinkingI-Thou relationFace and responsibility
View of GodPartner in creation-revelation-redemptionEternal Thou addressed in dialogueTrace in the face of the Other
EthicsTestimony through lifeDialogue and relationFirst philosophy, responsibility for Other
Critique of philosophyTotalizing idealism from Ionia to JenaDominance of I-It, loss of relationImperialism of the Same, ontological violence
Judaism-ChristianityComplementary incarnations of religious truthEmphasis on Jewish tradition, HasidismJudaism’s emphasis on justice

Influences & Connections

Summary Formulas

  • Rosenzweig: The fear of death generates philosophy, but philosophy denies death; a “new thinking” must break with totalizing systems to recover the lived relations of God, World, and Human.
  • Buber: The authentic I constitutes itself only in the I-Thou relation; God is the eternal Thou addressed in dialogue, not an object of theology, and has been eclipsed but not extinguished.
  • Levinas: The face of the Other breaks open totalizing ontology, commanding “Thou shalt not kill” and constituting the subject through infinite responsibility; ethics is first philosophy.

Timeline

YearEvent
1913Rosenzweig’s religious crisis and rediscovery of Judaism
1920Rosenzweig publishes Hegel and the State
1921Rosenzweig publishes The Star of Redemption
1923Buber publishes I and Thou
1925Rosenzweig publishes The New Thinking
1929Rosenzweig dies at age 43
1938Buber emigrates to Jerusalem
1947Levinas publishes Existence and Existents
1952Buber publishes Eclipse of God
1961Levinas publishes Totality and Infinity
1965Buber dies in Jerusalem
1974Levinas publishes Otherwise than Being
1995Levinas dies

Notable Quotes

“Only what is singular can die, and everything mortal is alone.” — Rosenzweig

“All actual life is encounter.” — Buber

“The face speaks to me and thereby invites me to a relation that has no common measure with a power that is exercised.” — Levinas


NOTE

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