“The atom.”

“Why?”

“Because it’s fun to investigate things.”

“Would you give only that answer to your father?”

“No. I’d tell him that if we don’t release some of its energy within a century, our children’s standard of living will be too low to support laboratories. And if we don’t succeed within two centuries, the world will starve.”

She smiled as Cornelia may have smiled when her boy Tiberius set forth to prevent Roman poverty, Roman starvation, Roman infanticide, and Roman war.

“It’s all right, Marvin. You can’t help hoping, and I can’t help loving you for hoping.”

“Darling, you don’t understand. Let me show you.”

And eternal youth went and brought his panacea. Other youths bring other panaceas—laws, books, crosses, machines. They bring laws that none obey, books that nobody reads, songs that are soon forgot, crosses that are mocked in jewels, serums that save the unfit, telephones that transmit hate and lies, dynamos and turbines that merely increase labor—and mother believes in them all.

From his bag he brought a little instrument containing a pinch of salt; nay, not so much, not a pinch. He took off his coat and spread it over both their heads as they lay in the deep dry moss. When minutes had passed and her eyes were grown accustomed to the darkness, he bade her look.