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🤔Intro to Philosophy

Existentialist Thinkers

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Why This Matters

Existentialism isn't just a historical movement—it's a toolkit for thinking about the questions that philosophy exams love to probe: What makes a life meaningful? How do we exercise freedom responsibly? What's the relationship between the individual and society? When you're tested on existentialism, you're being asked to demonstrate how these thinkers tackled the fundamental tension between human freedom and the apparent absurdity or groundlessness of existence. Understanding the distinctions between atheistic and theistic existentialism, between absurdism and authentic being, will help you navigate comparison questions and construct nuanced essay arguments.

These thinkers share a commitment to concrete human experience over abstract systems, but they diverge dramatically on questions of God, ethics, embodiment, and meaning-making. Don't just memorize names and book titles—know what philosophical problem each thinker is solving and how their approach differs from others in the tradition. That's what separates a mediocre exam response from one that demonstrates genuine philosophical understanding.


The Founders: Setting the Stage

These thinkers established the core existentialist concerns before the movement had a name. They diagnosed the crisis of meaning in modern life and proposed radical responses centered on individual choice and subjective truth.

Søren Kierkegaard

  • Father of existentialism—prioritized subjective, lived experience over Hegel's abstract systematic philosophy
  • Leap of faith describes the necessary embrace of uncertainty when committing to religious belief or ethical life stages
  • Three stages of existence (aesthetic, ethical, religious) map human development toward authentic selfhood through decisive choice

Friedrich Nietzsche

  • "God is dead" isn't celebration but diagnosis—the collapse of traditional values leaves humanity without ready-made meaning
  • Übermensch (Overman) represents the individual who creates new values rather than accepting inherited morality
  • Eternal recurrence functions as an ethical test: live so that you'd will your life to repeat infinitely

Compare: Kierkegaard vs. Nietzsche—both reject systematic philosophy and emphasize individual choice, but Kierkegaard leaps toward faith while Nietzsche demands we create values after faith's collapse. If an essay asks about existentialism's relationship to religion, these two frame the debate.

Fyodor Dostoevsky

  • Literary existentialism—novels like Crime and Punishment dramatize philosophical crises through psychologically complex characters
  • "If God does not exist, everything is permitted" (from The Brothers Karamazov) poses the central challenge of grounding morality without transcendence
  • Faith through doubt characterizes his approach—characters achieve belief only by passing through radical skepticism and suffering

Atheistic Existentialism: Freedom Without God

These thinkers confront human existence in a universe without divine purpose. The absence of God doesn't diminish human responsibility—it intensifies it, making us solely accountable for who we become.

Jean-Paul Sartre

  • "Existence precedes essence"—humans have no predetermined nature; we create ourselves through choices and actions
  • Bad faith (mauvaise foi) describes self-deception that denies our radical freedom by pretending we "have no choice"
  • Radical responsibility means we cannot blame circumstances, upbringing, or human nature for who we are

Simone de Beauvoir

  • "One is not born, but rather becomes, a woman" (from The Second Sex)—applies existentialist analysis to gender as social construction
  • The Other explains how dominant groups define themselves against subordinated groups, denying them full subjecthood
  • Existentialist ethics demands we act to expand freedom for all, not just ourselves—freedom is inherently relational

Albert Camus

  • The Absurd names the collision between human desire for meaning and the universe's indifferent silence
  • Philosophical suicide (accepting false consolations) and literal suicide are both rejected—we must live with the absurd
  • Rebellion against absurdity creates solidarity; The Myth of Sisyphus concludes we must imagine Sisyphus happy

Compare: Sartre vs. Camus—both are atheists confronting meaninglessness, but Sartre emphasizes creating meaning through committed action, while Camus insists we acknowledge absurdity without resolving it. Camus rejected the "existentialist" label precisely because of this distinction.


Phenomenological Existentialism: Being and Embodiment

These thinkers ground existentialism in careful analysis of how existence actually appears to consciousness. They ask not just "what should I do?" but "what does it mean to be at all?"

Martin Heidegger

  • Dasein ("being-there") replaces abstract "consciousness"—humans are always already embedded in a world of meanings and practices
  • Thrownness (Geworfenheit) describes our condition of finding ourselves in circumstances we didn't choose
  • Being-toward-death confronts mortality as the horizon that makes authentic existence possible—your death individualizes you

Maurice Merleau-Ponty

  • Embodied consciousness rejects mind-body dualism—perception and thought are always enacted through a living body
  • Lived experience (le vécu) emphasizes that we encounter the world through bodily engagement, not detached observation
  • Intersubjectivity shows that selfhood emerges through bodily interaction with others, not in isolation

Compare: Heidegger vs. Merleau-Ponty—both use phenomenological method, but Heidegger focuses on temporal existence (being-toward-death), while Merleau-Ponty emphasizes bodily existence (perception and flesh). For questions about existentialism's relationship to phenomenology, these are your key figures.


Theistic Existentialism: Faith and Transcendence

These thinkers retain religious commitment while embracing existentialist themes. They argue that authentic existence requires openness to transcendence and genuine encounter with others.

Karl Jaspers

  • Limit situations (Grenzsituationen)—death, suffering, guilt, and struggle force us to confront existence beyond everyday routine
  • Existential communication requires genuine dialogue where both parties risk transformation, not mere information exchange
  • Transcendence remains philosophically accessible through limit situations, even if never fully graspable

Gabriel Marcel

  • Problem vs. mystery—problems have technical solutions; mysteries (like existence, love, death) involve us too deeply to be "solved"
  • Being vs. having critiques modern reduction of existence to possession and consumption
  • Intersubjectivity and hope ground meaning in faithful relationships and openness to what exceeds our control

Compare: Jaspers vs. Marcel—both are theistic existentialists emphasizing transcendence and interpersonal encounter, but Jaspers approaches transcendence philosophically through limit situations, while Marcel grounds it in concrete experiences of love, fidelity, and hope. Marcel is more explicitly Catholic in orientation.


Quick Reference Table

ConceptBest Examples
Radical freedom & responsibilitySartre, de Beauvoir, Kierkegaard
The AbsurdCamus, Dostoevsky
Authenticity vs. inauthenticityHeidegger, Sartre (bad faith)
Embodiment & perceptionMerleau-Ponty
Faith & transcendenceKierkegaard, Jaspers, Marcel
Creation of valuesNietzsche, Sartre
Intersubjectivity & the Otherde Beauvoir, Merleau-Ponty, Marcel
Confronting mortalityHeidegger, Jaspers

Self-Check Questions

  1. Which two thinkers would you compare to illustrate the difference between atheistic and theistic approaches to existential freedom?

  2. How does Sartre's concept of "bad faith" differ from Heidegger's notion of "inauthenticity"—and what do they share?

  3. If an essay asked you to explain how existentialism addresses the body, which thinker provides the strongest response, and why?

  4. Compare Camus's "rebellion" against the absurd with Nietzsche's "creation of values"—what problem is each solving, and how do their solutions differ?

  5. Which thinker would best support an argument that existentialism has political and social implications beyond individual self-creation? What concept would you use?