Jack: Sam thinks you were right, that... that I'm good. He wants me to believe it, and I wanna believe it, too. It's just, I... I've hurt people. I didn't mean to. It was an accident. And I know I should feel bad, and I say I feel bad, but most of the time, I mostly... I don't feel anything. And that's why I think maybe... Maybe I'm a monster.
Mia Vallens: Jack. It doesn't matter what you are. It matters what you do. And even monsters can do good in this world.
Sam Winchester: Our mom, Mary, she's trapped on the other side. If we can get your powers back, maybe we can open that door up. Maybe...
Jack: You wanna save her.
Sam Winchester: Yeah. Yeah, I do. But... if this doesn't work, if that can't happen, that's okay, because I do care about you. But I should've told you. I'm sorry.
Jack: Sam. Why are you being so nice to me?
Sam Winchester: Because I know what it feels like to feel like you don't belong, to feel like there's this darkness inside of you, to be scared of who you are, what you can do. Dean, Cas... my family helped me through that. So now I wanna help you. Because you're not evil, Jack.
Jack: Mom said I could be good, that I had the choice to be good, that it was up to me. But she's dead because of me. I've only been on Earth for a few days, and I've already hurt people. I've already done bad things. And no matter how hard I try, I can't... I can't do the one good, stupid thing you want me to. So... I must be evil, like Lucifer.
Sam Winchester: Dean doesn't hate you. It... Look, sometimes the wires in Dean's head get crossed and... and he gets frustrated, and then he mixes frustration with anger, and... and... and fear.
Jack: Why would he be afraid?
Sam Winchester: Because Dean feels like it's his job to protect everyone. And right now, we need to protect you. But we may also need to protect people from you.