"I have."
"Now tell me, are any of these inventions beyond understanding?"
"Naturally not. They are based upon physical laws that are at present unknown on Terra."
"As—say—electricity was unknown in the days of Galileo?"
"About like that."
"Then, Carroll, it might be possible that you yourself made these discoveries?"
"I might have," admitted Carroll. "But—"
"Under a hallucination? To prove to your own mind that you were stealing something of scientific excellence?"
"There is the matter of the language."
"Irrelevant. It is a tongue no one here understands."