A collection of 8 short stories and 2 novels about robots by the 20th century American science fiction writer.

Centaurus was the destination of the space ship The Hope of Man. It had been traveling through space for almost twenty years, and still nine years of flight remained before Centaurus would be reached. For many on board the craft Earth had become a vague memory, while for others it was a mere dot in the vast starry reaches of space. Restlessness was evident everywhere; the people wanted to return to a place they knew was inhabited -- not continue to...