That's one of my favorite stories. They say you can't 'really'
   sell your soul for youth (or money, or fame, or power/control
   over others) - but yes, yes you can. Whether or not there is a
   devil or a soul is a matter of personal belief, but i think you
   lose your soul when you become part of The Machine, whatever you
   consider The Machine to be, or when you become a shell, existing
   only for The Game (the game of getting just a little more (money
   / power / fame / etc) than your fellow person), or the day your
   heart becomes closed to a fellow human. "