“You think you know the world you are living in. If you can feel it, and touch it, and smell it, and taste it, then it must be so. You tell yourself that you would bet your life on the simple fact that the sky is blue. And one day someone comes along and informs you emphatically that you’re wrong. Blue, you insist. Blue as the ocean. Blue as a whale. But that person shakes his head, and everyone else backs him up. You poor girl, they say. All those things - the ocean, the whale - they’re green. You’ve gotten them mixed up. You’ve got it wrong all along.”