S.: Alice! Will you kindly pay attention to your history lesson?

A.: I’m sorry, but how can one possibly pay attention to a book with no pictures in it?

S.: My dear child, there are a great many good books in this world without pictures.

A.: In this world perhaps. But in my world, the books would be nothing but pictures.

S: Your world? Huh, what nonsense!

A.: Nonsense? That’s it! If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn’t. And contrariwise, what it is, it wouldn’t be, and what it wouldn’t be, it would. You see?