"Now all that was left 'neath the bad-smelling sky was my big empty factory... the Lorax... and I. The Lorax said nothing. Just gave me a glance, just gave me a very sad, sad backward glance, as he lifted himself by the seat of his pants. And I'll never forget the grim look on his face when he heisted himself and took leave of this place, through a hole in the smog, without leaving a trace. And all that the Lorax left here in this mess was a small pile of rocks with the one word: UNLESS. Whatever that meant . . . well, I just couldn't guess."