“I don't know either. Then why shouldn't you?”
“Because I am.”
“There it is again,” said Diamond. “I don't see that you are. It looks quite the other thing.”
“Well, but listen to me, Diamond. You know the one me, you say, and that is good.”
“Yes.”
“Do you know the other me as well?”
“No. I can't. I shouldn't like to.”
“There it is. You don't know the other me. You are sure of one of them?”
“Yes.”
“And you are sure there can't be two mes?”