Eeverybody has a secret world inside of them. I mean everybody. All of the people in the whole world. No matter how dull and boring they are on the outside. Inside them they've all got unimaginable, maginificent, wonderful, stupid, amazing worlds. Not just one world. Hundreds of them. Thousands, maybe.
Barbie, Sandman - A Game of You, Sandman 37
Chapter 5 in the trade paperback.