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Philosophy Archive

Existentialism

An evidence-led introduction to existentialist thought on freedom, responsibility, authenticity, meaning, and the difficulty of living under uncertainty.

Nineteenth- and twentieth-century Europe
Symbolic archive illustration of an open doorway, notebook, and compass beneath a starry night

Overview

Origin

Nineteenth- and twentieth-century Europe

Founded period

Historical tradition

Important figures

Soren Kierkegaard · Friedrich Nietzsche

Major texts

See related archive records

Concept archive

Core Principles

PRINCIPLE 01

Freedom and responsibility

PRINCIPLE 02

authenticity

PRINCIPLE 03

finitude

PRINCIPLE 04

meaning and absurdity

Quotation archive

Quote Perspectives

Marry, and you will regret it; do not marry, and you will also regret it; whether you marry or do not marry, you will regret both. Laugh at the world's follies, and you will regret it; weep over them, and you will also regret it; whether you laugh at the world's follies or weep over them, you will regret both.
Søren Kierkegaard·Either/Or
Faith is precisely the paradox that the single individual as the single individual stands in an absolute relation to the absolute.
Søren Kierkegaard·Fear and Trembling
The slave revolt in morality begins when ressentiment itself becomes creative and gives birth to values: the ressentiment of natures that are denied the true reaction, that of deeds, and recuperate themselves by means of imaginary revenge.
Friedrich Nietzsche·On the Genealogy of Morality
Gradually it has become clear to me what every great philosophy so far has been: namely, the personal confession of its author and a kind of involuntary and unconscious memoir; also that the moral (or immoral) intentions in every philosophy constituted the real germ of life from which the whole plant had grown.
Friedrich Nietzsche·Beyond Good and Evil
I teach you the overman. Man is something that shall be overcome. What have you done to overcome him?
Friedrich Nietzsche·Thus Spoke Zarathustra
Man is condemned to be free. Condemned, because he did not create himself, yet is nevertheless at liberty; and from the moment that he is thrown into this world, he is responsible for everything he does.
Jean-Paul Sartre·Being and Nothingness
The struggle itself toward the heights is enough to fill a man's heart. One must imagine Sisyphus happy.
Albert Camus·The Myth of Sisyphus
One is not born, but rather becomes, a woman.
Simone de Beauvoir·The Second Sex
The 'essence' of Dasein lies in its existence.
Martin Heidegger·Being and Time
Death is a way to be, which Dasein takes over as soon as it is.
Martin Heidegger·Being and Time
My formula for greatness in a human being is amor fati: that one wants nothing to be different, not forward, not backward, not in all eternity.
Friedrich Nietzsche·The Gay Science
Become who you are.
Friedrich Nietzsche·Thus Spoke Zarathustra
One must imagine Sisyphus happy.
Albert Camus·The Myth of Sisyphus
Anxiety is the dizziness of freedom.
Søren Kierkegaard·The Concept of Anxiety
Existence precedes essence.
Jean-Paul Sartre·Existentialism is a Humanism
Man is condemned to be free.
Jean-Paul Sartre·Being and Nothingness
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you.
Friedrich Nietzsche·Beyond Good and Evil
Genuine love ought to be founded on the mutual recognition of two liberties; the lovers would then experience themselves both as self and as other: neither would give up transcendence, neither would be mutilated; together they would manifest values and aims in the world.
Simone de Beauvoir·The Second Sex
Love in action is a harsh and dreadful thing compared with love in dreams. Love in dreams is greedy for immediate action, rapidly performed and in the sight of all. But active love is labor and fortitude.
Fyodor Dostoevsky·The Brothers Karamazov
To cheat oneself out of love is the most terrible deception; it is an eternal loss for which there is no reparation, either in time or in eternity.
Søren Kierkegaard·Works of Love
Whatever is done from love always occurs beyond good and evil.
Friedrich Nietzsche·Beyond Good and Evil
What is hell? I maintain that it is the suffering of being unable to love.
Fyodor Dostoevsky·The Brothers Karamazov
One of the first signs of the beginning of understanding is the wish to die. This life appears unbearable, another unattainable.
Franz Kafka·The Zürau Aphorisms
The torment of despair is precisely this, not to be able to die. So to be sick unto death is, not to be able to die — yet not as though there were hope of life; no, the hopelessness in this case is that even the last hope, death, is not available.
Søren Kierkegaard·The Sickness Unto Death
Free for death, and free in death; a holy Naysayer, when there is no longer time for Yea: thus understandeth he about death and life.
Friedrich Nietzsche·Thus Spoke Zarathustra
What if my whole life has been wrong?
Leo Tolstoy·The Death of Ivan Ilyich
My formula for greatness in a human being is amor fati: that one wants nothing to be different, not forward, not backward, not in all eternity.
Friedrich Nietzsche·Ecce Homo
Man is condemned to be free. Condemned, because he did not create himself, yet, in other respects is free; because, once thrown into the world, he is responsible for everything he does.
Jean-Paul Sartre·Existentialism Is a Humanism
What do we mean by saying that existence precedes essence? We mean that man first of all exists, encounters himself, surges up in the world — and defines himself afterwards.
Jean-Paul Sartre·Existentialism Is a Humanism
To will oneself free is also to will others free.
Simone de Beauvoir·The Ethics of Ambiguity
All real living is meeting.
Martin Buber·I and Thou
"Alles wirkliche Leben ist Begegnung." / "All real living is meeting."
Martin Buber·I and Thou
Nothing is more seductive for man than his freedom of conscience, but nothing is a greater cause of suffering.
Fyodor Dostoevsky·The Brothers Karamazov
— Без бога-то и без будущей жизни? Ведь это, стало быть, теперь всё позволено, всё можно делать?
Fyodor Dostoevsky·The Brothers Karamazov
"Страдание — вот единственная причина сознания." / "Suffering is the sole origin of consciousness."
Fyodor Dostoevsky·Notes from Underground
The "essence" of Dasein lies in its existence.
Martin Heidegger·Being and Time
Grenzsituationen erfahren und Existenz werden ist dasselbe. / To experience boundary situations and to become existence is one and the same.
Karl Jaspers·Philosophy, Volume 2: Existenzerhellung
Either I allow the course of things to decide about me — vanishing as myself, since there is no real decision when everything just happens — or I deal with being originally, as myself, with the feeling that there must be a decision.
Karl Jaspers·Philosophy
The court wants nothing from you. It receives you when you come and it dismisses you when you go.
Franz Kafka·The Trial
The movement of faith must continually be made by virtue of the absurd, but yet in such a way, please note, that one does not lose the finite but gains it whole and intact.
Søren Kierkegaard·Fear and Trembling
Hope is for the soul what breathing is for the living body.
Gabriel Marcel·Homo Viator: Introduction to a Metaphysic of Hope
Aimer un être, c'est lui dire : toi, tu ne mourras pas.
Gabriel Marcel·Homo Viator
Nothingness lies coiled in the heart of being — like a worm.
Jean-Paul Sartre·Being and Nothingness
"Courage is the self-affirmation of being in spite of the fact of nonbeing." / German original unavailable: The Courage to Be was composed in English; the concept of Mut zum Sein renders "courage to be."
Paul Tillich·The Courage to Be
Courage is the self-affirmation of being in spite of nonbeing.
Paul Tillich·The Courage to Be
Although the physicality of death destroys us, the idea of death saves us.
Irvin D. Yalom·Staring at the Sun: Overcoming the Terror of Death
The problem of meaning, then, in its most rudimentary form is, How does a being who needs meaning find meaning in a universe that appears to have no meaning?
Irvin D. Yalom·Existential Psychotherapy
For success, like happiness, cannot be pursued; it must ensue, and it only does so as the unintended side effect of one's personal dedication to a cause greater than oneself or as the by-product of one's surrender to a person other than oneself.
Viktor Frankl·Man's Search for Meaning
What is happiness? The feeling that power increases — that a resistance has been overcome.
Friedrich Nietzsche·The Antichrist
All satisfaction, or what is commonly called happiness, is really and essentially always negative only, and never positive.
Arthur Schopenhauer·The World as Will and Representation
I revolt, therefore we exist.
Albert Camus·The Rebel
One is not born, but rather becomes, a woman.
Simone de Beauvoir·The Second Sex
We are thrown into the world.
Martin Heidegger·Being and Time
The self is a relation that relates itself to itself, or is the relation's relating itself to itself in the relation; the self is not the relation but is the relation's relating itself to itself.
Søren Kierkegaard (as Anti-Climacus)·The Sickness Unto Death
I teach you the Übermensch. Man is something that shall be overcome. What have you done to overcome him?
Friedrich Nietzsche·Thus Spoke Zarathustra
Man is the being who is what he is not and is not what he is.
Jean-Paul Sartre·Being and Nothingness
Hell is other people.
Jean-Paul Sartre·No Exit
Faith is namely this paradox that the single individual is higher than the universal, yet in such a way, be it noted, that the movement is repeated, that is, that the single individual, after having been in the universal, now as the single individual isolates himself as higher than the universal.
Soren Kierkegaard·Fear and Trembling
The mass crushes beneath it everything that is different, everything that is excellent, individual, qualified, and select.
Jose Ortega y Gasset·The Revolt of the Masses
One must imagine Sisyphus happy.
Albert Camus·The Myth of Sisyphus
One's life has value so long as one attributes value to the life of others, by means of love, friendship, indignation, compassion.
Simone de Beauvoir·The Ethics of Ambiguity
God is dead! God remains dead! And we have killed him! How shall we comfort ourselves, the murderers of all murderers? The holiest and mightiest thing the world has yet owned has bled to death under our knives — who will wipe this blood off us?
Friedrich Nietzsche·The Gay Science
This instinct for freedom, forcibly made latent, pushed back and penned up inside, finally only able to discharge and vent itself on itself — that, and that alone, is what bad conscience is in its beginnings.
Friedrich Nietzsche·On the Genealogy of Morality
A man can be himself only so long as he is alone; and if he does not love solitude, he will not love freedom; for it is only when he is alone that he is really free.
Arthur Schopenhauer·Parerga and Paralipomena
Life swings like a pendulum backward and forward between pain and boredom.
Arthur Schopenhauer·The World as Will and Representation
Whoever has been deeply wounded by the depth of his suffering — what a blessing that is! I do not love him because he lives today, but because he has overcome himself.
Friedrich Nietzsche·Thus Spoke Zarathustra

Origin

Existentialism is a modern label for diverse philosophical and literary approaches that place concrete existence, freedom, anxiety, responsibility, and finitude at the center of inquiry. The label does not name one unified school with a single doctrine. Its thinkers disagree about religion, morality, politics, knowledge, and the possibility of authentic life.

The tradition is usually associated with nineteenth- and twentieth-century European thought, though its questions have earlier antecedents. It asks what it means for an individual to live and choose without a complete guarantee that inherited institutions, rational systems, or social roles will supply a final meaning.

Historical Development

Kierkegaard's writings in nineteenth-century Denmark challenged abstract philosophical systems that seemed to overlook individual decision, passion, and faith. Nietzsche's critique of inherited morality and his reflections on nihilism, value, and self-overcoming opened another path. In the twentieth century, thinkers including Heidegger, Sartre, de Beauvoir, and Camus developed very different accounts of existence, freedom, embodiment, social relations, and absurdity.

Because these figures differ sharply, “existentialism” should not be used as a shorthand for despair or radical individualism. The Stanford Encyclopedia of Philosophy describes the field through questions about what it means to be human, how freedom is lived, and how persons take responsibility for their situation.

Kierkegaard and Early Existential Thought

Soren Kierkegaard is frequently treated as an important precursor of existentialism. His writings explore subjectivity, anxiety, despair, choice, and the relation between ethical life and religious faith. He uses pseudonyms, indirect communication, and literary forms that make it misleading to read every sentence as a straightforward doctrinal statement.

Kierkegaard's importance lies partly in his insistence that a life cannot be lived by abstract knowledge alone. A person must take up commitments under uncertainty. This claim does not mean that reasons are irrelevant; it asks how reasoning, passion, and responsibility meet in an individual existence.

Nietzsche and Individual Meaning

Friedrich Nietzsche analyzes nihilism, inherited values, religion, morality, and the possibility of self-overcoming. His work challenges readers to ask whether their ideals are living commitments or inherited habits. It also contains tensions and political dangers that cannot be ignored; later appropriations have often been selective or misleading.

Nietzsche is not simply an advocate of personal preference. His criticisms of morality and his literary experiments raise questions about value creation, cultural decay, and the difficulty of affirming life without metaphysical guarantees. These questions helped shape later existential debates about meaning.

Core Ideas

Existentialist approaches emphasize that persons are situated: they inherit bodies, histories, social roles, relationships, and material conditions they did not choose. Yet they also act, interpret, refuse, commit, and take responsibility. Freedom is therefore neither unlimited control nor a mere illusion; it is lived within constraints.

Other recurring themes include authenticity, anxiety, mortality, alienation, and the search for meaning. These concepts vary from thinker to thinker. They should be read through particular arguments and texts rather than turned into interchangeable slogans.

Freedom and Responsibility

Freedom in existential thought often brings responsibility rather than liberation from obligation. Choices disclose values and affect other people. A person cannot always select their circumstances, but they may still be responsible for how they respond, what commitments they sustain, and whether they evade the consequences of action.

This focus makes existentialism relevant to questions of meaning, but it does not erase structural conditions. Social oppression, poverty, violence, and historical circumstance shape what options are genuinely available. A responsible existential reading holds freedom and situation together.

Authenticity

Authenticity is not a demand to express every impulse or to reject all social ties. In many existential accounts, it concerns taking responsibility for one's situation and commitments rather than living through borrowed roles without reflection. This can include honest recognition of dependence, ambiguity, and obligations to others.

The concept is easily commercialized as a celebration of individual preference. Its philosophical uses are more demanding: they ask whether a person can own their choices without pretending to stand outside history, relationships, or mortality.

Meaning and Absurdity

Existentialism confronts the possibility that the world does not provide a final, universally agreed script for human purpose. Camus uses the language of absurdity to describe a tension between human demands for meaning and a world that does not answer them in the desired form. Other existential thinkers frame the problem through faith, commitment, or social responsibility.

The absence of a ready-made answer does not imply that nothing matters. It makes the questions of commitment, creation, responsibility, and relation to others more urgent. Existentialism therefore belongs in a knowledge cluster on meaning without supplying a simple prescription for “creating” it.

Important Thinkers

Kierkegaard and Nietzsche are foundational relationship records in this archive. Other important figures include Martin Heidegger, Jean-Paul Sartre, Simone de Beauvoir, Albert Camus, and Gabriel Marcel. Their differences concerning religion, politics, gender, ontology, and ethics are substantial and must be preserved in future records.

Major Works

Important works associated with existential thought include Kierkegaard's Either/Or, Nietzsche's Thus Spoke Zarathustra, Heidegger's Being and Time, Sartre's Being and Nothingness, de Beauvoir's The Ethics of Ambiguity, and Camus's The Myth of Sisyphus. These texts belong to different genres and historical situations.

Influence Today

Existentialism influences literature, theology, psychotherapy, political thought, feminism, film, and public discussions of identity and purpose. Its vocabulary of authenticity and meaning is widely used, often without the historical rigor of the original debates. The tradition remains valuable when it encourages attention to responsibility, ambiguity, and the consequences of choice.

It should not be turned into an instruction to solve suffering through attitude alone. Existential thinkers often address social conditions and relations with others, and contemporary readers should not use freedom language to deny material constraints or the need for collective action.

Sources

  1. Stanford Encyclopedia of Philosophy, “Existentialism.”
  2. Stanford Encyclopedia of Philosophy, “Søren Kierkegaard.”
  3. Stanford Encyclopedia of Philosophy, “Friedrich Nietzsche.”
  4. Internet Encyclopedia of Philosophy, “Existentialism.”

Learning Path

Part of a Structured Collection

Death & Mortality: The Philosophy of Dying and Meaning

A learning path through the philosophy of death: Epicurus and the Stoics on why death should not frighten us, Heidegger on being-toward-death, and the ethics of dying and grief.

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Existentialism and the Meaning Crisis

A learning path through existentialism and the meaning crisis: freedom, nihilism, absurdity, anxiety, and the search for meaning from Kierkegaard to Yalom.

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Ethics & Moral Wisdom

A structured learning path through moral philosophy, from the great ethical theories of duty, utility, and virtue to the practical art of making ethical decisions in everyday life.

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Existentialist Wisdom

A guided learning path through existentialist philosophy, covering the major thinkers, core concepts, and practical wisdom for confronting freedom, absurdity, anxiety, and the search for authentic meaning.

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Meaning & Suffering

A structured learning path through the philosophy of meaning and suffering, centered on Viktor Frankl and logotherapy: the will to meaning, the three pathways, and the freedom of the human spirit.

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Understanding Reality

A learning path through truth, knowledge, reality, and perception — from Plato to existential philosophy.

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Understanding Yourself

A learning path through self-knowledge, identity, wisdom, and practical discernment — from Socrates to modern philosophy.

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Life Questions

A learning path through enduring questions of happiness, meaning, purpose, fear, courage, and living well.

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Knowledge Network

Archive references

Sources

4 scholarly sources

Source and quality checks completed

Quality check completed 2026-07-22

Based on 4 scholarly sourcesLast updated 2026-07-22