Cobb: Dreams feel real while we're in them. It's only when we wake up that we realize something was actually strange.
Cobb: What's the most resilient parasite? An idea. A single idea from the human mind can build cities. An idea can transform the world and rewrite all the rules. Which is why I have to steal it.
Eames: You mustn't be afraid to dream a little bigger, darling.
Arthur: With the slightest disturbance, dreams are gonna collapse.