"Long after Earth was forgotten, a peaceful and unified galaxy took shape, an Empire governed from the majestic city-planet of Trantor. The system worked, and grew, for countless generations. Everyone believed it would work forever. Everyone except Hari Seldon. As the great scientific thinker of his age, Seldon could not be ignored. Reluctantly, the Commission of Public Safety agreed to finance the Seldon Plan. The coming disasterwas predicted by Seldon's advances in psychohistory, the mathematics of very large human numbers, and it could not be averted. The Empire was doomed. Soon Trantor would lie in ruins. Chaos would overtake humanity. But the Seldon Plan was a longer-term strategy to minimize the worst of what was to come"--P.  of cover.