"Where does Venus Equilateral get its air from?" snapped Burbank.
"That's what I want—"
"Answer me, please. I'm worried."
"So am I. Something—"
"Tell me first, from what source does Venus Equilateral get its fresh air?"
"From the air plant. And that is—"
"There must be more than one," said Burbank thoughtfully.
"There's only one."
"There must be more than one. We couldn't live if there weren't," said the Director.
"Wishing won't make it so. There is only one."