Mike Ehrmantraut: [threatening Lydia] Here are the rules: if you yell for help, try to give the man some kind of coded message, or otherwise tip him off, I am going to pull out my pistol and shoot you in the head. Same goes for panicking, breaking down into tears. Remember how you like to do that? If it happens this time, I am going to pull my pistol out, and I am going to shoot you in the head.
Mike Ehrmantraut: The woman put a hit out on me.
Walter White: Seriously?
Jesse Pinkman: Wait. A hit? What? Like the mafia?
Mike Ehrmantraut: Yeah, like the mafia.
Mike Ehrmantraut: Look at me, not at them. Lydia, look at me. If you make Schrader suspicious in any way, any way at all, tell me what's gonna happen next.
Lydia Rodarte-Quayle: You'll pull out your gun and shoot me.
Mike Ehrmantraut: And where will I shoot you?
Lydia Rodarte-Quayle: In the head.
Mike Ehrmantraut: The head. That's right. And it's a pistol, not a gun. I'm expecting precision here.
Jesse Pinkman: What if we can rip off that train, and no one ever knows it got robbed?
Jesse Pinkman: Boosting methylamine from a train is, like, a major rap. The point is nobody, other than us, can ever know that this robbery went down.
Jesse Pinkman: [measuring the train track for the heist] It's perfect! Yeah, we do it here. We do it right here!