Historical situations vary; a man may be born a slave in a pagan society or a feudal lord or a member of the proletariat. What never varies is the necessity for him to be in the world, to work in it, to live out his life in it among others, and, eventually, to die in it. These limitations are neither subjective nor objective; rather they have an objective as well as a subjective dimension: objective, because they affect everyone and are evident everywhere; subjective because they are experienced and are meaningless if man does not experience them—that is to say, if man does not freely determine himself and his existence in relation to them. And, as diverse as man’s projects may be, at least none of them seem wholly foreign to me since each presents itself as an attempt to surpass such limitations, to postpone, deny, or come to terms with them.