" Emery nodded. “But I’m afraid you’re now a week behind in your studies.” “You told me I was two months ahead!” Ceony frowned. “A week behind,” he repeated, as though not hearing her. And perhaps he didn’t. Emery Thane had a talent for selective hearing, she’d learned. “I’ve determined it’s best for you to study the roots of Folding. "

― Charlie N. Holmberg , The Glass Magician (The Paper Magician, #2)