Supernatural, Season 4

Dean:
I want to talk to Cas alone.

Uriel:
I think I'll go seek... revelation. We might have some further orders.

Dean:
Well, get some doughnuts while you're out.

Uriel:
Ah, this one, just won't quit, will he? I think I'm starting to like you boy. [Uriel disappears]

Dean:
You guys don't walk enough. You're gonna get flabby. You know, I'm starting to think Junkless has a better sense of humor that you do.

Castiel:
Uriel's the funniest angel in the garrison. Ask anyone.

Dean:
What's goin' on, Cas? Since when does Uriel put a leash on you?

Castiel:
My superiors have begun to question my sympathies.

Dean:
Your sympathies?

Castiel:
I was getting to close to the humans in my charge: you. They feel I've begun to express emotions; doorways to doubt. This can impair my judgement.

Dean:
Well, tell Uriel, or whoever, you do not want me doing this. Trust me.

Castiel:
Want it, no. But I've been told we need it.

Dean:
You ask me to open that door and walk through it, you will not like what walks back out.

Castiel:
For what it's worth, I would give anything not to have you do this.