" Do you like that picture?” he asked.
“For heaven’s sake don’t let him get started about Art and all that,” said Edmund hurriedly, but Lucy, who was very truthful, had already said, “Yes, I do. I like it very much.”
“It’s a rotten picture,” said Eustace.
“You won’t see it if you step outside,” said Edmund. "
― C.S. Lewis , The Voyage of the Dawn Treader (Chronicles of Narnia, #3)