That seemed to make the unknown still more angry, but it was plain he found difficulty in commanding words to express himself.
“You’re a fool!” he finally snapped.
“Thank you!” smiled Frank.
“You’re an idiot!”
“Thank you again.”
“You are the one who is crazy!”
“Still more thanks.”
“How have I acted to make you fancy me demented?”
“You are out here, and you may be contemplating self-destruction by throwing yourself from this train.”
“Don’t worry about that. I am contemplating nothing of the sort.”