When we say that man chooses himself, we do mean that every one of us must choose himself; but by that we also mean that in choosing for himself he chooses for all men. For in effect, of all the actions a man may take in order to create himself as he wills to be, there is not one which is not creative, at the same time, of an image of man which as he believes he ought to be... If, moreover, existence precedes essence and we will to exist at the same time as we fashion our image, that image is valid for all and for the entire epoch in which we find ourselves. Our responsibility is thus much greater than we had supposed, for it concerns mankind as a whole. If I am a worker, for instance, I may choose to join a Christian rather than a Communist trade union. And if, by that membership, I choose to signify that resignation is, after all, the attitude that best becomes a man, that man’s kingdom is not upon this earth, I do not commit myself alone to that view. Resignation is my will for everyone, and my action is, in consequence, a commitment on behalf of all mankind. Or if, to take a more personal case, I decide to marry and to have children, even though this decision proceeds simply from my situation, from my passion or my desire, I am thereby committing not only myself, but humanity as a whole, to the practice of monogamy. I am thus responsible for myself and for all men, and I am creating a certain image of man as I would have him to be. In fashioning myself I fashion man.