Dean and Samuel in “Unfinished Business”

Dean

If you want forgiveness, find a priest.

I just want you to understand.

Dean

Oh, I understand. That you're a liar. You talk about putting blood first – which is funny 'cause you sound just like my dad - difference is, he actually did!

I am putting blood first.

Dean

Oh, give me a break.

Mary's my blood, my daughter! Don't come at me like I sold you out, Dean. You sold out your own mother! It was her or Sam and you chose Sam, plain and simple.

Dean

Oh, that is such crap. You wanna know what really happened? You chose a demon over your own grandsons!

See it how you want. I don't even know what Sam is. And you want me to protect him? And you? You're a stranger. No, really, tell me – what exactly are you supposed to be to me?

Dean

I'll tell you who I am. I'm the guy you never wanna see again. 'Cause I'll make it out of here, trust me. And the next time you see me, I'll be there to kill you.

Don't think there's gonna be a next time.

Dean

Whatever gets you though the night.