MEG：Look, I'm simpler than you think. I've figured one thing out about this world – just one, pretty much. You find a cause, and you serve it. Give yourself over, and it orders your life. Lucifer and Yellow Eyes – their mission was it for me.
DEAN：So, what? We should trust you because you wanted to free Satan from Hell?
MEG：I'm talking "cause," douchebag, as in reason to get up in the morning. Obviously, these things shift over time. We learn, we grow. Now, for me currently, the cause is bringing down the King. And I know we'll need help to do it.
DEAN：Crowley ain't the problem this year.
MEG：When are you gonna get it? Crowley's always the problem. He's just waiting for the right moment to strike. I know what I'm supposed to do. And it isn't screw with Sam and Dean or lose the only angel who'd go to bat for me.