Jean-Paul Sartre

Jean-Paul Sartre's Being and Nothingness, published in occupied Paris in 1943, sets out the philosophical case for a claim he had already been dramatizing in fiction: that human beings have no fixed nature given to them in advance, by God or by biology, that would tell them what to become. Existence precedes essence, in his formula, meaning a person first simply exists, thrown into a particular situation with no script, and only afterward, through the choices they actually make, becomes whatever they turn out to be. That leaves human beings, on his account, radically free in a way most people find unbearable rather than liberating, since it means no excuse, no claimed nature, upbringing, or circumstance, can ever fully account for what a person does, a condition he called being condemned to be free precisely because the freedom is not chosen and cannot be escaped. He gave the failure to face this squarely a name, bad faith, the various strategies by which people pretend to themselves that they are simply what their role or their past makes them, a waiter playing at being nothing but a waiter, rather than admitting they are choosing that role moment to moment. His play No Exit dramatized the same argument from another angle in its closing line, hell is other people, meaning not that other people are inherently hateful but that being seen and judged by another consciousness is an inescapable constraint on the freedom Sartre took to be the basic fact of human existence.

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The freedom Sartre had described mainly as an individual, almost solitary condition in Being and Nothingness became, in his later work, inseparable from politics. He turned increasingly toward Marxism through the 1950s and set out to reconcile it with existentialism in the Critique of Dialectical Reason, published in 1960, arguing that individual freedom is real but always exercised inside material scarcity and social structures that groups can either reinforce or actively resist together, a shift from the earlier emphasis on solitary choice toward what he called group praxis.

That turn carried Sartre into direct political engagement rather than commentary from a distance. He wrote the preface to Frantz Fanon's The Wretched of the Earth in 1961, defending anticolonial violence as a response colonized peoples had not chosen but been forced into, and he spoke out against French conduct in the Algerian War even as it drew threats against his own life. In 1964 he declined the Nobel Prize in Literature outright, stating a writer should not allow himself to be turned into an institution, a refusal consistent with his lifelong suspicion of any fixed role, literary or philosophical, imposed on him from outside.

The philosopher who had defined freedom as a burden each person carries alone spent his last decades arguing that the burden could only be met through collective political action, never resolved by private reflection alone.