For Rant 6

Luke Skywalker had done this once, a couple of years ago. He'd mentioned it to the other Jedi. No one else had tried it because it had exhausted Luke to the point of collapse, and Jedi were seldom in a position to survive a technique that tired them so completely.

(...)

And he didn't think he'd be as terribly drained as Luke by the technique. He was stronger in the Force than Luke Skywalker. He'd known that almost since they'd met - that he had more pure power than the legendary Jedi Master. But this was, perhaps, the first time he'd been able to say it to himself without a little thrill of pride. He was just stronger, and that was all. It usually didn't matter. Now it did.