- [telling Dean how she hates the life of a hunter]
- Young Mary Winchester: I want a family. I wanna be safe. You know the worst thing I can think of, the very worst thing, is for my children to be raised into this like I was.
- [Dean starts to tear up]
- Dean Winchester: Even if this sounds really weird, will you promise me that you will remember?
- Young Mary Winchester: Okay.
- Dean Winchester: On November 2nd, 1983, don't get out of bed. No matter what you hear, or what you see... promise me you won't get out of bed.
- Dean Winchester: [to Castiel] Oh, come on! What, are you allergic to straight answers, you son of a bitch!
- Dean Winchester: This is the car of a lifetime. Trust me, this thing's still going to be badass when it's forty.
- Dean Winchester: [referring to killing the Yellow-Eyed Demon in 1973] Alright, if I do this then the family curse breaks, right? Mom and Dad live happily ever after, and-and Sam and I grow up playing little league and chasing tail?
- Castiel: You realize, if you do alter the future, your father, you, Sam, you'll never become hunters. And all those people you saved, they'll die.
- Dean Winchester: I realize.
- Castiel: And you don't care?
- Dean Winchester: Oh, I care. I care a lot. But these are my parents. I'm not gonna let them die again. I can't. Not if I can stop it.
- Castiel: Your brother is headed down a dangerous road, Dean, and we're not sure where it leads. So stop it. Or we will.
- Castiel: [Dean wakes up with a start after dreaming of Hell] Hello, Dean. What were *you* dreaming about?