- Dean Winchester: Truth is, I'm tired, Sam. And, I don't know, it's like there's a light at the end of the tunnel.
- Sam Winchester: It's Hellfire, Dean.
- Dean Winchester: Yeah, well, whatever. You're alive, I feel good for the first time in a long time. I got a year to live, Sam. I'd like to make the most of it, so what do you say we kill some evil sons of bitches and we raise a little Hell, huh?
- Sam Winchester: You're unbelievable.
- Dean Winchester: Very true.
- Sam Winchester: [walked in on dean having sex in the previous scene] let me see your knife.
- Dean Winchester: what for?
- Sam Winchester: so i can gouge my eyes out.
- Dean Winchester: it's a beautiful, natural act sam.
- Sam Winchester: it's a part of you i never wanted to see, dean.
- Sam Winchester: How could you make that deal?
- Dean Winchester: Because I couldn't live with you dead.
- Walter: And you call us sins. We're not sins, man! We are natural human instinct, and you can repress and deny it all you want but the truth is, you are just animals. Horny, greedy, hungry, violent animals. And you know what? You'll be slaughtered like animals, too.