Buber vs Sartre — What's the Difference?

Quick Answer

Martin Buber and Jean-Paul Sartre are usually classified together as existentialists, yet their philosophies are almost exact inversions of one another. For Buber, the fundamental fact of human existence is not consciousness and not freedom but relation: we do not first exist as isolated selves who then enter into contact; we become selves in relation. His famous distinction is between two basic word-pairs — I-It and I-Thou. The I-It relation is the mode of experience and use, in which the world appears as objects to be known, categorized, and consumed. The I-Thou relation is the mode of meeting, in which another being is addressed and responded to in full presence, mutual and unmediated. For Sartre, by contrast, the fundamental fact of human existence is freedom, and the Other enters the picture primarily as a problem: the Other's gaze freezes me into an object, robs me of my transcendence, and forces me into a struggle for recognition that can never be won. "Hell is other people," Sartre famously wrote — the exact opposite of Buber's conviction that "all real living is meeting."

Definition

Buber's dialogical philosophy is developed most fully in I and Thou (1923). The human person is not a self-contained substance but a being that exists in relation, and the character of the relation determines the character of the self. In the I-It attitude, the world is constituted as a collection of objects — things to be experienced, described, measured, and used; the I that relates to an It is a subject that experiences and uses, an I that stands apart from its world. In the I-Thou attitude, the whole person enters into relation with another whole being; the Thou is not experienced as an object among objects but is met as a presence, addressed as a counterpart, and encountered in the present moment without mediation. Crucially, Buber insists that the I-Thou cannot be sustained: it flares up and passes away, and every Thou must eventually become an It. But the meaning of human life is found in the fidelity to the possibility of meeting, and the eternal Thou — God — is met in and through every genuine meeting with another person.

Sartre's account of the Other is developed in Being and Nothingness (1943) and rests on his ontology of consciousness. Consciousness is a nothingness, a lack of being, a transcendence that is perpetually projecting itself toward the future. The Other, Sartre argues, is revealed to me through the look (le regard): when I am seen, I become an object in the Other's world — a body with a determinate place, a character, a fixed nature. My transcendence is stolen from me, and I experience shame or pride as I realize I am being judged. The relation between consciousnesses is therefore a relation of conflict: each freedom tries to recover its transcendence by objectifying the Other in turn — through the gaze, through love (which seeks to possess the Other's freedom), through masochism and sadism. There is no escape to a higher relation; the circle of objectification is the permanent structure of being-with-others.

Historical Context

The two thinkers came from different worlds and wrote for different generations. Buber (1878–1965) was a Viennese-born Jewish philosopher who became one of the great interpreters of Hasidism and, later, a tireless advocate of Jewish-Arab dialogue in Palestine and of dialogical community generally. I and Thou was written in the aftermath of the First World War, in a Europe exhausted by mass violence, and it belongs to a broad revolt against the reduction of human beings to things — the same revolt that produced expressionism, the religious existentialism of the Weimar years, and Buber's own collaboration with Franz Rosenzweig on the great German translation of the Hebrew Bible. For Buber, the crisis of the age was the triumph of the I-It: the domination of technique, bureaucracy, and ideology had reduced the human world to a field of objects, and the task of philosophy was to recall the possibility of genuine meeting.

Sartre (1905–1980) came to maturity in a very different climate — the existentialist Paris of the German occupation and the postwar years. Being and Nothingness was written during the war, partly in prisoner-of-war camps, and its atmosphere is one of intense solitude: the individual thrown into an alien world, forced to choose without excuses. The encounter with the Other in Sartre is shaped by his readings of Hegel's master-slave dialectic and of Heidegger's Mitsein, but he radicalizes both: where Hegel hoped for mutual recognition, Sartre sees only reciprocal objectification; where Heidegger treats being-with as an existential structure, Sartre treats it as the scene of a permanent struggle. His later political evolution — toward Marxism, commitment, and the ethics of solidarity — softened this picture, but the ontology of the Other remained the foundation.

Core Comparison

| Dimension | Buber | Sartre | |-----------|-------|--------| | Fundamental fact of existence | Relation (I-Thou and I-It) | Freedom (consciousness as nothingness) | | The Other | A Thou to be met, addressed, and confirmed | A gaze that objectifies and threatens my freedom | | Meaning | Emerges between persons, in dialogue | Created by the individual project, in commitment | | The body and the world | The world is home and counterpart | The world is alien, viscous, contingent (nausea) | | Love | Mutual confirmation of the Thou | An impossible project of possessing the Other's freedom | | Ethics | Responsiveness to the Other; hallowing of everyday life | Authenticity, responsibility for one's choices, commitment | | The divine | The eternal Thou, met in every genuine meeting | Absent; God's death leaves humanity to invent itself | | The ideal | A life of dialogue, of genuine meeting | A life of lucid freedom, free from bad faith |

On the self. For Buber, the self has no independent content: "There is no I as such but only the I of the primary word I-You and the I of the primary word I-It." The person who lives exclusively in the I-It mode becomes an It among Its — an object to others and to himself; the person who risks the I-Thou relation becomes a genuine person, for personhood is constituted by address and response. For Sartre, the self is a project, a transcendence: I am what I make of myself through choices, and no relation can give me my being. The Other, far from constituting me, threatens to dissolve my project by fixing me in a nature. Where Buber sees the self as born in meeting, Sartre sees the self as forged in solitude and menaced by meeting.

On the Other and the look. This is the sharpest contrast. Buber's Other is a Thou: a being who addresses me and whom I address, whose otherness is the very condition of genuine dialogue, and who is never reduced to my experience of them. Even the most instrumental relation — the doctor and the patient, the teacher and the student — carries within it the possibility of the Thou. Sartre's Other is primarily a threat: the look reduces me to an object, and my responses — shame, pride, flight, aggression — all testify to the impossibility of a relation of equals. Where Buber describes meeting, Sartre describes collision; where Buber speaks of mutual confirmation, Sartre speaks of reciprocal alienation.

On meaning and freedom. Buber's meaning is dialogical: it arises in the between (das Zwischen), the space opened by genuine meeting, and it is received as much as created. Sartre's meaning is a construction: the universe is absurd and contingent, and significance exists only because free consciousness chooses projects and commits to them. For Buber, the individual alone is less than a person; for Sartre, the individual alone is the only source of value. The practical difference is enormous: Buber's ethic is one of response and faithfulness — one answers the address of the other — while Sartre's ethic is one of invention and responsibility — one chooses one's values and must not pretend they were given.

On the body, the world, and the everyday. The two philosophers also differ in how they describe the texture of ordinary experience. Buber's world is full of possible Thous: the tree, the cat, the stranger, the child, the work of art can each be addressed, and the hallowing of everyday life is the very substance of his religious humanism. The I-It world of technique and utility is real, but it is not the whole truth; the world is always open to the transformation of the It into the Thou. Sartre's world is characterized by contingency, viscosity, and the nausea of things that simply are, without reason; the everyday is the realm of the "in-itself" and of bad faith, and the authentic individual must transcend it through the project. Where Buber finds the holy in the midst of the ordinary — the eternal Thou met in the present moment — Sartre finds the ordinary world absurd and the self's task to be the invention of meaning against it. The difference is the difference between a universe in which meeting is possible and a universe in which it is not.

Key Differences

1. Relation versus freedom as the ground. Buber grounds the self in relation; Sartre grounds the self in freedom. What the one treats as the primary fact, the other treats as a consequence or a threat.
2. The Other as Thou versus the Other as gaze. For Buber the Other is the source of my humanity; for Sartre the Other is the one who steals my transcendence. One speaks of meeting, the other of conflict.
3. Meaning as received versus meaning as made. Buber's meaning arises between persons and is discovered in dialogue; Sartre's meaning is created by the free project in a meaningless universe. One is open to a transcendent source; the other is closed to everything but human choice.
4. Love and possession. Buber's love is the confirmation of the Thou, a standing in relation of mutual presence; Sartre's love is an impossible attempt to possess the Other's freedom, doomed to sadism, masochism, and disappointment.
5. The religious dimension. Buber's philosophy culminates in the eternal Thou and in a hallowing of everyday life; Sartre's philosophy begins from the absence of God and makes human freedom the sole legislator of value. What Buber calls the deepest possibility of meeting, Sartre calls the oldest bad faith.
6. The mood of the world. Buber's world is a place of address, where things can become Thou; Sartre's world is a place of contingency and nausea, where things press upon consciousness without reason.

Key Similarities

The two thinkers nevertheless share more than their existentialist label suggests. Both begin from lived experience rather than from abstract systems, and both reject the Cartesian picture of a self-contained subject: Buber denies that the person can be understood apart from relation, and Sartre denies that the ego is a substance inhabiting consciousness — his early work argues that the ego is itself an object constituted for consciousness. Both therefore reject individualism in the sense of a doctrine of self-sufficient atoms; for both, the encounter with the Other is not an optional extra but a structural feature of human existence. Both also share a phenomenological method in a broad sense: they describe concrete situations — the meeting, the look — with an eye to their essential structures, rather than arguing from premises.

Both thinkers also converge on the demand for intensity and presence against the deadening routines of modern life. Buber's critique of the I-It world — the world of technique, bureaucracy, and distraction — is parallel to Sartre's critique of bad faith and of the "spirit of seriousness," which takes the meaning of things as given rather than chosen. Both insist that the unexamined, merely conventional life is a betrayal of what is most human, and both call for a transformation of the self that is total. Finally, both were public intellectuals who carried their philosophy into politics: Buber as a theorist of dialogical community and a critic of the state as an I-It machine, Sartre as the model of the engaged intellectual. The disagreement between them is a disagreement about what human beings are; the agreement is that the question matters absolutely.

Modern Reflection

The Buber–Sartre confrontation maps directly onto a divide in contemporary culture between two accounts of human flourishing. The dialogical model — that we become ourselves in and through relationships, that meaning is found between persons, that the good life is a life of genuine meeting — underlies much of modern psychology of attachment, the ethics of care, and the philosophical literature on friendship and love. The existentialist model — that we are radically free individuals who must create meaning against a meaningless background, and that others are at best a testing ground for our freedom — underlies much of the modern discourse of autonomy, self-creation, and personal authenticity. Both models are alive in popular self-help, in therapy, and in moral argument, and much of the time we are not even aware that we are shifting between two incompatible philosophies of the self.

The contrast is also acute in the digital age. Social media has made Sartre's analysis eerily prophetic: the self is increasingly constituted by the look — by likes, comments, profiles, and the permanent possibility of being objectified in public. Yet the same technologies are used for the purposes Buber described: dialogue, meeting, the confirmation of the other across distance. The question of whether our networked existence is dominated by the gaze or opened to genuine encounter is, in effect, the question of whether we live in Sartre's world or Buber's. Many philosophers now argue that the two are not simply opposed: that freedom requires the confirmation of others, and that genuine dialogue is possible only between free persons. Gabriel Marcel and Karl Jaspers, both contemporaries of Buber, developed precisely this middle position — presence, fidelity, and communication as the ground of freedom — and their work suggests that the Buber–Sartre opposition, while real, is not the last word.

Related Thinkers

• Jean-Paul Sartre: The French existentialist whose account of the look and of conflict between consciousnesses is the most powerful modern defense of the solitary self.
• Karl Jaspers: The existentialist of communication, whose philosophy of boundless dialogue stands close to Buber's dialogical thought.
• Gabriel Marcel: The Christian existentialist of presence and fidelity, who developed a relational ontology parallel to Buber's I-Thou.
• Simone de Beauvoir: Sartre's closest philosophical partner, whose ethics of ambiguity complicates the solitary picture by making the Other essential to freedom.

Related Quotes

• Buber on I-Thou: Buber's declaration that all real living is meeting — the heart of his dialogical philosophy.
• Sartre on Hell Is Other People: The famous line from No Exit that crystallizes Sartre's account of the Other as a threat to freedom.
• Marcel on Presence: Marcel's account of presence and availability, the relational alternative to both objectification and conflict.

Further Learning

Start with What Is the Other? to see Sartre's account developed in detail, then contrast it with What Is Authenticity? and What Is Bad Faith?. The Existentialist Wisdom and Understanding Yourself collections gather the wider debate on the self, freedom, and the meaning of relation.

Sources

1. "Martin Buber." Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/buber/
2. "Jean-Paul Sartre." Stanford Encyclopedia of Philosophy. https://plato.stanford.edu/entries/sartre/
3. "Martin Buber." Internet Encyclopedia of Philosophy. https://iep.utm.edu/buber/
4. "Jean-Paul Sartre." Internet Encyclopedia of Philosophy. https://iep.utm.edu/sartre/
5. Buber, Martin. I and Thou (1923). Translated by Walter Kaufmann. New York: Charles Scribner's Sons, 1970.
6. Sartre, Jean-Paul. Being and Nothingness (1943). Translated by Hazel E. Barnes. New York: Washington Square Press, 1992.