Lost, Season 5

John Locke:
You and I both know when we were before the flash, James. So who was it you saw? Charlie? Shannon? Yourself?

James "Sawyer" Ford:
And how is it that you knew when we were, Johnny Boy? That light in the sky — it was from the Hatch, wasn't it?

John Locke:
The night that Boone died... I went out there and started pounding on it as hard as I could. I was... confused... scared. Babbling like an idiot, asking, why was all this happening to me?

James "Sawyer" Ford:
Did you get an answer?

John Locke:
Light came on, shot up into the sky. At the time, I thought it meant something.

James "Sawyer" Ford:
Did it?

John Locke:
No. It was just a light.

James "Sawyer" Ford:
So why'd you turn us around then? Don't you wanna go back there?

John Locke:
Why would I wanna do that?

James "Sawyer" Ford:
So you could tell yourself to do things different, save yourself a world of pain.

John Locke:
No, I needed that pain — to get to where I am now.