What Is Existentialism? Meaning, Key Ideas & Philosophers

What Is Existentialism?

Existentialism is a philosophical movement that focuses on individual existence, freedom, choice, and the search for meaning. It holds that humans are not born with a predetermined essence or purpose — instead, we create meaning through our actions, decisions, and commitments in a world that offers no inherent guarantees.

The famous Sartrean formulation captures it: "Existence precedes essence." We exist first, and then we define ourselves through what we do.

Related: Learn more about Existentialism Explained: Freedom, Responsibility, and the Search for Meaning

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Related: Learn more about The Meaning of Life: What Philosophers Say

Existentialism emerged as a major intellectual force in the 19th and 20th centuries, profoundly influencing philosophy, literature, psychology, theology, and the arts.

Core Ideas of Existentialism

1. Existence Precedes Essence

Unlike a tool (designed for a purpose before it exists), humans have no pre-given nature or meaning. We are "thrown" into existence and must create our own identity through choices and actions.

2. Radical Freedom

Existentialists assert that humans are fundamentally free — even when constrained by circumstances. This freedom is both empowering and terrifying, because it means we are fully responsible for who we become. There is no destiny, divine plan, or human nature to fall back on.

3. Anxiety and Dread (Angst)

The awareness of our absolute freedom — and the weight of responsibility it carries — produces a distinctive feeling of anxiety (German: Angst). This isn't ordinary worry; it's a deep, existential unease that arises from confronting the openness of our future and the absence of guaranteed meaning.

4. Absurdity

Many existentialists (especially Albert Camus) emphasize the absurd: the conflict between humans' desire for meaning and the universe's apparent indifference to that desire. The world doesn't provide answers — we must create our own.

5. Authenticity

Living authentically means making choices that genuinely reflect your values and taking responsibility for those choices — rather than conforming to social expectations, hiding behind roles, or pretending you have no choice. Its opposite, bad faith (mauvaise foi), is self-deception: denying your freedom to avoid the anxiety it brings.

6. The Absurd Hero

Camus proposed that the proper response to absurdity is neither despair nor denial, but revolt — continuing to live fully and passionately despite the absence of ultimate meaning. His image of Sisyphus, eternally pushing a boulder uphill, is the existentialist icon: "One must imagine Sisyphus happy."

Key Existentialist Philosophers

Søren Kierkegaard (1813–1855)

Often called the "father of existentialism." The Danish philosopher argued against systematic philosophy (especially Hegel) and emphasized subjective experience, individual choice, and the "leap of faith" required for religious belief. Key works: Either/Or, Fear and Trembling, The Sickness Unto Death.

Friedrich Nietzsche (1844–1900)

Though he didn't identify as an existentialist, Nietzsche's ideas profoundly shaped the movement. His declaration that "God is dead" captured the crisis of meaning in a secular age. He championed the will to power, self-overcoming, and the creation of new values. Key works: Thus Spoke Zarathustra, Beyond Good and Evil.

Martin Heidegger (1889–1976)

German philosopher who explored the question of Being (Dasein). Heidegger analyzed how humans exist in the world — always within a context of time, death, and care — and how inauthentic existence (conformity to "the They") prevents genuine self-understanding. Key work: Being and Time.

Jean-Paul Sartre (1905–1980)

The most publicly identified existentialist. Sartre argued that humans are "condemned to be free" — we didn't choose to exist, but having been born, we are entirely responsible for what we make of ourselves. He explored bad faith, nothingness, and the gaze of others. Key works: Being and Nothingness, Nausea, No Exit.

Simone de Beauvoir (1908–1986)

Philosopher, novelist, and feminist who applied existentialist ideas to gender and oppression. Her landmark work The Second Sex (1949) argued that "one is not born, but rather becomes, a woman" — a fundamentally existentialist insight about how identity is constructed rather than given.

Albert Camus (1913–1960)

Algerian-French writer and philosopher of the absurd. Though he rejected the existentialist label, his ideas are central to the tradition. Camus explored how to live meaningfully in an indifferent universe through revolt, solidarity, and creative engagement. Key works: The Stranger, The Myth of Sisyphus, The Plague.

Existentialism in Literature and Art

Existentialism profoundly influenced creative works:

• Literature: Sartre's Nausea, Camus' The Stranger, Dostoevsky's Notes from Underground, Kafka's The Trial
• Theater: "Theater of the Absurd" — Samuel Beckett's Waiting for Godot, Eugène Ionesco's The Bald Soprano
• Film: Ingmar Bergman's The Seventh Seal, the works of the French New Wave
• Art: Francis Bacon's distorted figures, Alberto Giacometti's emaciated sculptures

Existentialism vs. Nihilism

A common confusion: existentialism is not nihilism.

• Nihilism says nothing has meaning, and that's the end of the story
• Existentialism says nothing has inherent meaning, but humans can and must create meaning through their choices and commitments

Existentialism begins where nihilism stops. It acknowledges the absence of given meaning and then asks: Now what?

Criticisms of Existentialism

• Too individualistic — critics argue it neglects social structures, community, and collective identity
• Anxiety as privilege — worrying about "authenticity" may be a luxury unavailable to those struggling for survival
• Vagueness — concepts like "authenticity" and "bad faith" can be difficult to define precisely
• Impractical — some argue existentialism offers no concrete ethical guidelines
• Marxist critique — Sartre himself grappled with this, attempting to reconcile existentialism with Marxism in his later work

Existentialism's Legacy

Existentialism's influence extends far beyond philosophy:

• Psychotherapy — existential therapy (Rollo May, Irvin Yalom, Viktor Frankl) helps patients confront questions of meaning, death, freedom, and isolation
• Feminism — de Beauvoir's existentialist feminism remains foundational
• Popular culture — existentialist themes permeate modern film, literature, and even video games
• Self-help and personal development — the emphasis on radical responsibility and authenticity echoes through modern self-improvement discourse

Conclusion

Existentialism is a philosophy for anyone who has ever asked, "What's the point?" — and refused to accept either comfortable illusions or despairing resignation. By insisting that we are free, responsible, and capable of creating meaning in an indifferent universe, existentialism offers not easy answers but a courageous framework for living deliberately and authentically.

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Existentialism's exploration of individual freedom and responsibility is not merely an abstract philosophical stance but a reflection of the socio-cultural upheavals of its time. The 19th and 20th centuries were marked by rapid industrialization, two world wars, and existential crises that questioned traditional values and religious beliefs. This backdrop of uncertainty and change provided fertile ground for existentialist thought to take root, as it addressed the disorientation felt by individuals in the face of a seemingly indifferent universe. Existentialism's focus on personal choice and the creation of meaning can be seen as a response to the loss of traditional structures and the rise of secularism, offering a framework for navigating the complexities of modern life.

Moreover, existentialism's influence extends into the realm of ethics, challenging conventional moral frameworks and prompting individuals to consider the authenticity of their moral choices. By emphasizing personal responsibility, existentialists argue that ethical decisions should arise not from adherence to societal norms or religious edicts but from an individual's genuine values and beliefs. This approach encourages a deeper engagement with one's moral compass, prompting introspection and a commitment to living a life congruent with one's principles. This existential ethic invites continuous questioning and reassessment of one's actions, fostering a dynamic and evolving sense of morality.

In contemporary contexts, existentialist themes resonate strongly, particularly as technology and globalization continue to blur cultural and existential boundaries. The digital age, with its virtual realities and social media landscapes, presents new challenges in constructing authentic identities and relationships. Existentialism offers a lens through which individuals can critically examine the roles they assume online and offline, urging them to remain vigilant against the inauthenticity that can arise from digital personas and societal pressures. As such, existentialism remains a vital philosophical tool for individuals seeking to navigate an increasingly complex and interconnected world while maintaining a sense of personal integrity and purpose.