
It depends on my project, that is to say, on how I perceive the world, how I experience it." Anguish is also associated with Sartre's notion of despair, which he defines as optimistic reliance on a set of possibilities that make action possible. Valuation depends on me, that’s true, but not on my will.

Nevertheless, "It is not the will that gives value to the possibility. Anguish leads people to realize that their actions guide humanity and allows them to make judgments about others based on their attitude towards freedom. Sartre defines anguish as the emotion that people feel once they realize that they are responsible not just for themselves, but for all humanity. Thus, Sartre rejects what he calls "deterministic excuses" and claims that people must take responsibility for their behavior.

Sartre asserts that the key defining concept of existentialism is that the existence of a person is prior to their essence or " existence precedes essence". In early translations, Existentialism and Humanism was the title used in the United Kingdom the work was originally published in the United States as Existentialism, and a later translation employs the original title. Existentialism Is a Humanism ( French: L'existentialisme est un humanisme) is a 1946 work by the philosopher Jean-Paul Sartre, based on a lecture by the same name he gave at Club Maintenant in Paris, on 29 October 1945.
