Isaac Asimov’s bestselling, classic Sci-Fi Foundation trilogy is considered by many fans and critics to be among his masterworks, and right now all three books in the series are on sale. Wikipedia’s entry on the series says:
The premise of the series is that the mathematician Hari Seldon spent his life developing a branch of mathematics known as psychohistory, a concept of mathematical sociology. Using the laws of mass action, it can predict the future, but only on a large scale. Seldon foresees the imminent fall of the Galactic Empire, which encompasses the entire Milky Way, and a dark age lasting 30 thousand years before a second great empire arises. Seldon also foresees an alternative where the interregnum will last only one thousand years. To ensure the more favorable outcome, Seldon creates a foundation of talented artisans and engineers at the extreme end of the galaxy, to preserve and expand on humanity’s collective knowledge, and thus become the foundation for a new galactic empire.
Foundation (4.5/5 stars, currently priced at $3.00)
For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Sheldon, creator of the revolutionary science of psychohistory, can see into the future–to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save mankind, Seldon gathers the best minds in the Empire–both scientists and scholars–and brings them to a bleak planet at the edge of the Galaxy to serve as a beacon of hope for a fututre generations. He calls his sanctuary the Foundation.
But soon the fledgling Foundation finds itself at the mercy of corrupt warlords rising in the wake of the receding Empire. Mankind’s last best hope is faced with an agonizing choice: submit to the barbarians and be overrun–or fight them and be destroyed.
Isaac Asimov’s Foundation novels are one of the great masterworks of science fiction. As unsurpassed blend of nonstop action, daring ideas, and extensive world-building, they chronicle the struggle of a courageous group of men and women dedicated to preserving humanity’s light in a galaxy plunged into a nightmare of ignorance and violence thirty thousand years long.
Although small and seemingly helpless, the Foundation had managed to survive against the greed of its neighboring warlords.
But could it stand against the mighty power of the Empire, who had created a mutant man with the strength of a dozen battlefleets…?
After years of struggle, the Foundation lies in ruins—destroyed by the mutant mind power of the Mule. But it is rumored that there is a Second Foundation hidden somewhere at the end of the Galaxy, established to preserve the knowledge of mankind through the long centuries of barbarism. The Mule failed to find it the first time—but now he is certain he knows where it lies.
The fate of the Foundation rests on young Arcadia Darell, only fourteen years old and burdened with a terrible secret. As its scientists gird for a final showdown with the Mule, the survivors of the First Foundation begin their desperate search. They too want the Second Foundation destroyed…before it destroys them.