Dean Winchester (to Sam): We've been through some tough times. There's no denying that. And for the longest time, I blamed Dad. I mean, hell, I blamed Mom, too, you know? I was angry. But say we could send Dad back knowing everything. Why stop there? Why not send him even further back and let some other poor sons of b*tches save the world? But here's the problem. Who does that make us? Would we be better off? Well, maybe. But I got to be honest... I don't know who that Dean Winchester is. And I'm good with who I am. I'm good with who you are. 'Cause our lives... they're ours. And maybe I'm just too damn old to want to change that.