“Duties are universally measured by relations. Is anyone a father? If so, it is implied that the children should take care of him, submit to him in everything, patiently listen to his reproaches, his correction. But he is a bad father. Are you naturally entitled, then, to a good father? No, only to a father. Is a brother unjust? Well, keep your own situation towards him. Consider not what he does, but what you are to do to keep your own faculty of choice in a state conformable to nature.”