The Memory of Earth

by Orson Scott Card

The planet called Harmony had been settled by humans nearly forty million years before. The colony had been placed under the care of an artificial intelligence, called the Oversoul, high in orbit. This master computer had one overriding command: Guard the people of Harmony against the dangers that destroyed humankind on Earth and other worlds. But now the Oversoul was itself in danger. Its systems were failing. Soon, within a thousand years, catastrophic war would break out on Harmony unless the Oversoul could be repaired. The Oversoul determined that its core must be taken back to lost...

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