John Winchester (to Dean): You know, when you were a kid... I'd come home from a hunt. And after what I'd seen... I'd be wrecked. And you... You'd come up to me... you'd put your hand on my shoulder, and you'd look me in the eye. You'd say, "It's okay, Dad." Dean. I'm sorry. You shouldn't have to say that to me. I should've been saying that to you. You know, I put... I put too much on your shoulders. I made you grow up too fast. You took care of Sam, and you took care of me. You did that. And you didn't complain, not once. I just want you to know... that I am so proud of you.
(Dean ghost watching John and Sam arguing...)
John Winchester: This demon killed your mother. Killed your girlfriend. You begged me to be part of this hunt. Now if you killed that damn thing when you had the chance, none of this would've happened.
Sam Winchester: It was possessing you, Dad. I would've killed you too!
John Winchester: Yeah, and your brother would be awake right now!
Dean Winchester: Shut up. Both of you! (they can't hear him)
Sam Winchester: Go to hell.
John Winchester: I should've never taken you along in the first place. I knew it was a mistake.
Dean Winchester: I said shut up! (breaks a glass of water) Dude, I full-on Swayze'd that mother.
Dean Winchester: Why do you want us out of the big fight?
John Winchester: This demon... it's a bad son of a b*tch. I can't make the same moves if I worry about keeping you alive.
Dean Winchester: You mean you can't be as reckless.
John Winchester: Look... I don't expect to make it out of this in one piece. Your mother's death... it almost killed me. I can't watch my children die too. I won't.
Dean Winchester: What happens if you die? What happens if you die and we could've done something about it? You know, I've been thinking. I.... Maybe Sammy's right about this one. We should do this together. We're stronger as a family. We just are. You know it.
John Winchester: Sammy. I don't think I ever told you this... but the day you were born, you know what I did? I put a hundred bucks into a savings account for you. I did the same thing for your brother. It was a college fund. And every month, I'd put in another $100 until.... Anyway, my point is, Sam... that this was never the life that I wanted for you.
Sam Winchester: Then why did you get so mad when I left?
John Winchester: You gotta understand something. After your mother passed... all I saw was evil. Everywhere. And all I cared about was... Was keeping you boys alive. I wanted you... prepared. Ready. See, somewhere along the line, I... I stopped being your father... and I... I became your... Your drill sergeant. So when you said that you wanted to go away to school... all I could think about, my only thought was... that you were gonna be alone. Vulnerable. Sammy, it just... It never occurred to me what you wanted. I just couldn't accept the fact that you and me, we're just different.