Jean-Paul Sartre



Summary

Jean-Paul Sartre (1905–1980) was a French philosopher, playwright, novelist, and political activist, and the central figure of 20th-century existentialism. His philosophy emphasizes radical freedom, individual responsibility, and the absence of any predetermined human nature or cosmic purpose.

Core Concepts

Existence Precedes Essence

Sartre's foundational claim: unlike objects (e.g., a paper-knife, which is designed with a purpose before it is made), humans exist first and define themselves through their choices. There is no human nature, no predetermined essence — we are what we choose to become.

Radical Freedom and Responsibility

Because there is no God, no cosmic plan, and no human nature, humans are "condemned to be free." This freedom is absolute and inescapable — even choosing not to choose is a choice. With this freedom comes total responsibility: we are responsible not only for ourselves but, in choosing, for all of humanity.

Bad Faith (Mauvaise Foi)

Bad faith is the self-deception of denying our freedom by pretending we are determined by external forces — our social role, our past, our biology. The waiter who is "too much" a waiter, the woman who pretends not to notice her hand is being held — both are in bad faith, denying their freedom to choose.

The Look (Le Regard)

The experience of being seen by another person objectifies us, reducing our subjective freedom to an object in their world. This conflict between subjects — each trying to assert their freedom over the other — is the foundation of Sartre's claim that "hell is other people."

References