" COBB: Our dreams feel real while we're in them. It's only when we wake we realize things were strange.
Ariadne gestures around them-
ARIADNE: But all the textures of real life-the stone, the fabric... cars... people... your mind can't create all this.
COBB: It does. Every time you dream. Let me ask you a question: You never remember the beginning of your dreams, do you? You just turn up in the middle of what's going on.
ARIADNE: I guess.
COBB: So... how did we end up at this restaurant? "
― Christopher J. Nolan , Inception: The Shooting Script