"Your metabolism is not too different," he observed. "At least your digestive system is about as unselective as the Terran. That is normal for any reigning race of a system. Undoubtedly you do have a close approximation of the molecular structure, since I know that your planet is very much like Terra.
"Unfortunately I am not as deeply versed in organic chemistry as I might be or I'd be able to make a few tests. But, Rhine, the idea that two races in the galaxy being so similar in every way that they are cross-fertile is preposterous!"
"Eternity," said Rhinegallis with a murmur, "is that length of time necessary to permit everything to happen at least once."
Carroll grinned. "And that will be the last probability—and furthermore eternity will be sitting on its fundament for ten thousand galactic years after everything else has happened waiting for that little item to show up so it—eternity—can fold up and go home!"
He turned away from her and addressed himself to the equipment again. He worked at it for an hour and then turned to her with a cryptic smile.
"You're a rather dangerous responsibility," he said.
"I know but it was your idea."
"What bothers me," he said thoughtfully, "is whether you will hinder in the end. You will not help now. But will you give me trouble later on?"
"I don't understand."