Jack: I can't.
Locke: Why can't you?
Jack: Because I'm not a leader.
Locke: Yet they all treat you like one.
Jack: I don't know how to help them. I'll fail. I don't have what is takes.
Locke: Why are you out here, Jack?
Jack: I think I'm goin' crazy.
Locke: Oh, you're not going crazy.
Locke: No, crazy people don't think they're going crazy, they think they're getting saner.