If he got to punch anyone today it would hopefully be this man. He was that angry. He felt like he'd heard this speech before, only slightly different. Luke had been his master then. That clearly hadn't been a lesson Luke had learned for himself when he tried to kill him in his sleep for showing darkness in his heart.

"Am I? It's foolish to claim that you contend with the Dark Side and yet deny it from your being with your every breath. You don't accept it within yourself. You fight your very natures as part of your teachings." As for who he learned from - experience had been his teacher. Luke's betrayal had been his most important lesson that he would never forget as long as he drew breath.