Because I could kill you, Jack. Right here, right now. And I could kill every single one of your friends, and there is not a thing you could do to stop me. But instead of killing you, I saved your life, and now I want to save them too.
This is what he wanted. This has been what he has been waiting for. Everything that he has done has been to get us here. He wanted to get us all at the same place at the same time in a nice enclosed space where we had no hopes of getting out.
Locke said that he couldn't leave the Island without us. I think that he can't leave the Island unless we're all dead. He told me that he could kill any one of us whenever he wanted, so what if he hasn't because he's not allowed to? What if he's trying to get us to kill each other?
Listen carefully. There's a well on the main Island a half mile south from where we were just left. Desmond is inside it. Locke wants him dead, which means you are going to need him. Do you understand me?