Many of Sartre’s best-known lines come from his 1945 lecture Existentialism Is a Humanism, his most accessible statement of the ideas worked out at length in Being and Nothingness (1943).
Sartre in Beijing, 1955 — public domain
“Existence precedes essence.”Existentialism Is a Humanism (1946)
You are not born with a fixed purpose; you make one by how you live.
“Man is condemned to be free; because once thrown into the world, he is responsible for everything he does.”Existentialism Is a Humanism
Freedom is not a gift you can decline — and neither is the responsibility.
“Man is nothing else but what he makes of himself.”Existentialism Is a Humanism
Your character is the sum of your choices, not your intentions.
“In life, a man commits himself and draws his own portrait, and there is nothing but that portrait.”Existentialism Is a Humanism
There is no hidden “real you” apart from what you actually do.
“Hell is other people.”No Exit (1944)
Sartre later explained he meant that relationships turn hellish when we let others’ judgments define us — not that people are bad.
“Freedom is what you do with what’s been done to you.”Saint Genet (1952)
Circumstances shape you, but they do not get the last word.
“Words are loaded pistols.”What Is Literature? (1947)
To speak or write is already to act on the world.
“Human life begins on the far side of despair.”The Flies (1943)
Giving up false hopes can be where a freely chosen life starts.
The Café de Flore, where Sartre and Beauvoir wrote — Celette, CC BY-SA 4.0
These circulate widely under the same name, but don’t hold up:
Sartre emphasized existential freedom, responsibility, and the creation of meaning. His lessons highlight that individuals must define their own essence through choices.
Jean-Paul Sartre on Wikipedia · Stanford Encyclopedia: Sartre · Sartre: life and ideas
