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Molton took Sadler down the corridor, past the quiet fountains, and saw him safely on the rolling floor that led to the main concourse. As he walked back to the house, lingering by the fragrant little garden, he was almost bowled over by a troop of laughing children racing across to the playground in Sector Nine. The corridor echoed briefly with their shrill voices; then they were gone like a sudden gust of wind.
Professor Molton smiled as he watched them racing toward their bright, untroubled future—the future he had helped to make. He had many consolations, and that was the greatest of them. Never again, as far ahead as imagination could roam, would the human race be divided against itself. For above him beyond the roof of Central City, the inexhaustible wealth of the Moon was flowing outward across space, to all the planets Man now called his own.