"I still don't understand it," said he.
"You will, in time," I replied.
"For God's sake, Mycroft, you're not a yogi."
"And you're not an idiot." I sneered. "Are you?"
He glared indignantly. "All I know is that it's all Greek to me. Say it again, would you?"
"What is born at the same time as the world, destined to live as long as the world, but never five weeks old?"
"I don't see how stupid riddles are going to teach me anything."
"When you're in the middle of something," said I, "you can never see out the other end."