What is meant here by saying that existence precedes essence? It means first of all, man exists, turns up, appears on the scene, and, only afterwards, defines himself. If man, as the existentialist conceives him, is indefinable, it is because at first he is nothing. Only afterward will he be something, and he himself will have made what he will be.”
Man is condemned to be free; because once thrown into the world, he is responsible for everything he does. It is up to you to give [life] a meaning. Life has no meaning a priori; It is up to you to give it a meaning, and value is nothing but the meaning that you choose.
Man is nothing else but what he purposes, he exists only in so far as he realizes himself, he is therefore nothing else but the sum of his actions, nothing else but what his life is.
― Jean-Paul Sartre