When at last he was assured of Graham's words, he nudged him violently.

"That's _too_ much," said he.
"You're poking fun at an old man.

I've been suspecting you know more than you pretend." "Perhaps I do," said Graham.

"But no! why should I go on acting?
No, I do not know what a Pleasure City is." The old man laughed in an intimate way.
"What is more, I do not know how to read your letters, I do not know what money you use, I do not know what foreign countries there are.

I do not know where I am.