"Well, darling, I looked at yours and felt a little guilty in marrying a young girl of twenty-three. But the fact is I'm sixty-five. I've been rejuvenated before."

"I rather suspected it when you started aging so suddenly last week," she said. "Before that you didn't look a day over thirty. But it doesn't matter."

"It's worse than that, Leah." His face worked convulsively. "I've been here twice before. This is my third trip."

"I'm too modern to act shocked, Howard. If you didn't want to tell me before, dear, it's perfectly all right."

"Look, darling!" Perspiration stood on his forehead. "You don't seem to understand. But then you never could add or subtract. Now listen carefully. Each trip clips five years off your life span."

"Everyone knows that, of course. But it's better to be young...."

"It's better to be alive than dead," he said harshly.

"But your doctors have given you a longevity span to the age of ninety."

"Suppose it was eighty, instead of ninety?"

"Oh, dear, you worry too much," she said. "Doctors don't make such mistakes."