"I know how you feel ... I want to run and rescue Luna, too. But we have no idea where she is, or even if she's still alive. Tom Riddle knows you will surface to help your friends. He has this irritating power over you ... always able to draw you out into the open, by threatening those you care about ... so now I have to exert my influence over you to keep you in. And if you think I'm going to concede in a power struggle to that snake-botherer, then you really don't know me at all."