Sam and Dean in “Unfinished Business”

Sam

Closing the gates. It's a suicide mission for you. I want to slam hell shut too, okay? But I want to survive it. I want to live. And so should you. You have friends up here, family, hell, you even got your own room now! You were right, kay? I see light at the end of the tunnel and I'm sorry you don't. I am. But it's there. And if you come with me, I can take you to it.

Dean

Sam, be smart.

Sam

I am. And so are you. You're not a grunt, Dean, you're a genius. When it comes to lore, you're the best damn hunter I've ever seen. Better than me, better than Dad. I believe in you, Dean, so please, please, believe in me too.