Leonard Shelby: "I have to believe in a world outside my own mind. I have to believe that my actions still have meaning, even if I can't remember them. I have to believe that when my eyes are closed, the world's still there. Do I believe the world's still there? Is it still out there?... Yeah. We all need mirrors to remind ourselves who we are. I'm no different."

Leonard Shelby: "Will I lie to myself to be happy? In your case Teddy, yes I will."