Lost, Season Five

Richard:
Next time we see each other, I'm not gonna recognize you, all right? You give me this.

(He gives Locke a compass)

Locke:
What is this?

Richard:
It's a compass.

Locke:
What does it do?

Richard:
It points north, John. Look, I wish I had time to be more sensitive about this because it's a lot to swallow, but you need to know it in order to do what you gotta do. So I'm just gonna say it, okay? The only way to save the island, John, is to get your people back here. The ones who left.

Locke:
Jack, Kate? But the chopper was headed for the boat. The boat...

Richard:
No, they're fine, John, and they're already home, so you have to convince them to come back.

Locke:
How... How am I supposed to do that?

Richard:
You're gonna have to die, John.

(The sky flashes again and Richard disappears)