"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.
Leanord Shelby a.k.a. Guy Pierce from one of my favorite movies: Memento