We get born empty slowly filed by what overflows in others and then we see one day ourselves imagined in our mind
Existentialism is a Humanism
Man is nothing else but that which he makes of himself. There is no human nature since there is no God to conceive of it. Man is not only that which he conceives himself to be, but also that which he wills himself to be, and since he conceives of himself only after he exist, just as he wills himself to be after being thrown into existence, man is nothing other than what he makes of himself. This is the first principle of Existentialism.