Sartre did account for Christian existentialists, but focuses primarily on the atheistic view in one of his major works, Existentialism Is a Humanism. He further goes on to explain that our essence as humans come from first existing, and from there, making choices that finally define us as a person.
In Existentialism is a Humanism, Sartre explains that in human beings, “existence precedes essence. ” Meaning, humans are created without any purpose, but with growth and maturing they find their purpose. J. P. Sartre gives the example of the paper clip, noting that this inanimate object was created with the intent of a purpose. Therefore.
The lecture The Existentialism is a humanism of Sartre is one of the best-selling French philosophy book. Pronounced at the Sorbonne (well known university in Paris) in 1946, two years after Being and Nothingness (his theory of ontology theory) being published, the lecture aims to remove misunderstandings and criticisms directed to this book, especially marxists and catholics ones.