"Man can will nothing unless he has first understood that he must count on no one but himself; that he is alone, abandoned on earth in the midst of his infinite responsibilities, without help, with no other aim than the one he sets himself, with no other destiny than the one he forges for himself on this earth."

--Jean-Paul Sartre 1905-1980

Jean-Paul Sartre was an Existential Philosopher who believed that existence precedes essence and that we are responsible for who we become as people.

Existentialism--philosophy has to begin with  Human Subjectivity.