Breaking Bad, Season 3

Jesse:
Combo was us, man. He was one of us. Does that mean nothing?

Walter:
Why didn't you go after these guys two or three months ago?

Jesse:
'Cause I just found out about them.

Walter:
What's to find out? It's a dispute over turf, right? I mean, how hard could it have been for you to track them down on their turf and kill them months ago? Because back then you were too busy getting high, feeling sorry. Murder is not part of your twelve-step program. This is not some amends that you have to make. What you are talking about here is pointless. This achieves nothing. It accomplishes nothing.

Jesse:
If you don't see what it accomplishes, there is no way I can explain it you.

Walter:
Jesse, listen to me: you are not a murderer. I am not and you are not. It's as simple as that. [Jesse gets up to leave] Jesse...

Jesse:
I'm doing it...with or without you.