"It's quite impossible for us to walk that plank."
"I don't believe they see as we do. I've been watching them. I wonder if they know this is simply blackness for us. How can we make them understand?"
"Anyhow, we must make them understand."
I think we said these things with a vague half hope the Selenites might somehow understand. I knew quite clearly that all that was needed was an explanation. Then as I saw their faces, I realised that an explanation was impossible. Just here it was that our resemblances were not going to bridge our differences. Well, I wasn't going to walk the plank, anyhow. I slipped my wrist very quickly out of the coil of chain that was loose, and then began to twist my wrists in opposite directions. I was standing nearest to the bridge, and as I did this two of the Selenites laid hold of me, and pulled me gently towards it.
I shook my head violently. "No go," I said, "no use. You don't understand."
Another Selenite added his compulsion. I was forced to step forward.
"I've got an idea," said Cavor; but I knew his ideas.
