2026-07-23 — knowphilosophers.site
Existentialism's core thesis: existence precedes essence. Humans have no pre-given nature — you exist first, then define yourself through choices and actions.
Kierkegaard, the father of existentialism, opposed Hegel's system. His three stages of life (aesthetic, ethical, religious), concept of anxiety as freedom's dizziness, and despair as the 'sickness unto death' foundational existential thought.
Heidegger re-asked the forgotten question of Being. Dasein (being-there), being-in-the-world, being-toward-death, and thrownness are his key concepts. Later he turned to language: 'Language is the house of Being.'
Sartre's core: existence precedes essence. Man is 'condemned to be free.' Bad faith is逃避逃避 freedom's burden by pretending to be determined. Consciousness is nothingness that can negate and create.
Existentialism thrived in post-WWII ruins. Camus' absurdism, Beauvoir's feminism, and existential psychotherapy extend its legacy. In the AI age, existentialism's concern for freedom and authenticity is more urgent than ever.
Engage in AI-powered dialogue with Kierkegaard, Heidegger, or Sartre at knowphilosophers.site. Ask them about freedom, anxiety, being-toward-death, or any existential question.