Sam Winchester: You were right. It wasn't an angel. It was Gregory. I don't know, Dean. I just, um... I wanted to believe... so badly I'd... It's so damn hard to do this... what we do. All alone, you know. And there's so much evil out in the world, Dean, I feel like I could drown in it. And when I think about my destiny, when I think about how I could end up...

Dean Winchester: Yeah, well, don't worry about that, all right? I'm watching out for you.

Sam Winchester: Yeah, I know you are. But you're just one person, Dean. And I needed to think there was something else watching too, you know? Some higher power. Some greater good. And that maybe...

Dean Winchester: Maybe what?

Sam Winchester: Maybe I could be saved. But, uh, you know, that just clouded my judgment. And you're right. We gotta go with what we know, with what we can see... with what's right there in front of our own two eyes.