A chemistry teacher diagnosed with terminal lung cancer teams up with his former student to cook and sell crystal meth.

Walter White: I am not in danger, I am the danger.
Jesse Pinkman: So you do have a plan? Yeah, Mr. White! Yeah, science!
Saul Goodman: Better call Saul!
Walter White: I won.
Jesse Pinkman: [triumphantly] Yeah, bitch!
Jesse Pinkman: Nah, come on man. Some straight like you, giant stick up his ass at like what, sixty, he's just gonna break bad?
Jesse Pinkman: I'm a blowfish, yo!
Walter White: I've got your restraining order right here.
[grabs crotch]
Walter White: Restrain this!
Mike: No more half measures.
Skyler White: Walter, if I have to hear one more fucking time that you did it for the family...
Walter White: I did it for me. I liked it. I was good at it. And... I was really... I was alive.
Walter White: I watched Jane die. I was there. And I watched her die.
Skyler White: And why did it feel so good?
Walter White: Because it's illegal.
Walter White: Never give up control.
[repeated line]
Jesse Pinkman: Bitch!
Walter White: Who are you talking to right now? Who is it you think you see? Do you know how much I make a year? I mean, even if I told you, you wouldn't believe it. Do you know what would happen if I suddenly decided to stop going into work? A business big enough that it could be listed on the NASDAQ goes belly up. Disappears. It ceases to exist, without me. No, you clearly don't know who you're talking to, so let me clue you in. I am not in danger, Skyler. I AM the danger. A guy opens his door and gets shot, and you think that of me? No! I am the one who knocks!