Jack Kline: You know, Sam and Dean, they were grateful.
Mary Winchester: If Sam and Dean saw what you did, they would be as worried as I am.
Jack Kline: Are you gonna tell them?
Mary Winchester: You need help, we'll help you. We're your family.
Jack Kline: You can't.
Mary Winchester: We care about you, Jack.
Jack Kline: No, just leave me alone.
Eliot: You live with Sam and Dean, right? They're not here right now. Are they fighting ghosts?!
Jack Kline: What's a ghost? I should go.
Max: Hey, it's... cool. We know. About their whole Hunter thing.
Jack Kline: Oh. Good. I don't like to lie. It makes my stomach hurt. Like when you have to burp, but you can't burp... Yeah.
Jack Kline: When it was gone, how did you... how'd you feel?
Donatello Redfield: Like... the galaxy. You know, Jack, our galaxy's all bright and shiny and spinny, but in its center lies this very large black hole. It's the same with me. I'm all bright and shiny, obviously... Not so much spinny. But inside? Empty.
Jack Kline: So you feel bad?
Donatello Redfield: I feel... nothing. Losing your soul doesn't make you bad. It doesn't make you anything. It's, um... an absence of... of pity, of empathy... of humanity. How do you feel, Jack?
Jack Kline: I don't know. I know I don't feel...nothing, but I don't feel the same, either. And maybe I just don't know what nothing feels like.