Supernatural, Season 1

Dean:
You wanna go back to school?

Sam:
Yeah, once we're done huntin' the thing.

Dean:
Huh.

Sam:
Why, is there somethin' wrong with that?

Dean:
No. No, it's, uh, great. Good for you.

Sam:
I mean, what are you gonna do when it's all over?

Dean:
It's never gonna be over. There's gonna be others. There's always gonna be somethin' to hunt.

Sam:
But there's got to be somethin' that you want for yourself-

Dean:
Yeah, I don't want you to leave the second this thing's over, Sam.

Sam:
Dude, what's your problem?

Dean:
Why do you think I drag you everywhere? Huh? I mean, why do you think I came and got you at Stanford in the first place?

Sam:
'Cause Dad was in trouble. 'Cause you wanted to find the thing that killed Mom.

Dean:
Yes, that, but it's more than that, man. You, me, Dad. I want us to be together again. To be a family again.

Sam:
Dean. We are a family. I'd do anything for you. But things will never be the way they were before.

Dean:
Could be.

Sam:
I don't want them to be. I'm not going to live this life forever. Dean, when this is all over, you're gonna have to let me go my own way.

[Dean looks sad]