Cameron: If my power source was leaking radiation, I would know. I have sensors for that.
John: Where are they?
Cameron: You can't see them.
John: (scoffs) No, of course not. So I just have to trust you on it. But stuff does go wrong with you, doesn't it? Stuff breaks … you kill birds, you twitch … you try to murder me. You're not perfect. You're a machine.