“We might write up inscriptions on walls⁠—”

“How do we know their eyes would see the sort of marks we made?”

“If we cut them⁠—”

“That’s possible, of course.”

I took up a new thread of thought. “After all,” I said, “I suppose you don’t think these Selenites so infinitely wiser than men.”

“They must know a lot more⁠—or at least a lot of different things.”

“Yes, but⁠—” I hesitated.

“I think you’ll quite admit, Cavor, that you’re rather an exceptional man.”

“How?”