"Ugh, I hope not," the Doctor said. "I'll lose all my secrets, lose all my mystery. Won't be worth anything to anyone. And if it's one thing I learn from you in the future, it's you can't have enough mystery."

He paused. "No, should not be talking about that, should alter subject now."

"Or perhaps now."

He groaned. "Uuuugh, I keep saying what I'm thinking I can't think at all!"