Foundation tells the story of four groups of historians, scientists, and archivists attempting to maintain a record of human knowledge as their far-future galactic society regresses. The novel spans more than a century and charts the successes and failures of the groups as they echo out through human history. It forms a set of parables about the nature of knowledge, the trends inherent in human society, and the difficulty of cultivating a love for knowledge in a civilization.
A prequel to Asimov's Foundation trilogy, Forward the Foundation is the continuing story of Hari Seldon, a mathematics professor who invented a formula to tell the future. His discovery causes him to become embroiled in the troubled world of intergalactic politics, but his personal life is in shambles after the death of his wife and son. His invention allows him to foresee the Second Foundation and lay out a plan for humanity's salvation.
Foundation and Earth is a science fiction novel, the final book in the Foundation series, and continues the adventures of Golan Trevize and Janov Pelorat, two citizens of the future society known as the Foundation. Together, the pair sets out to find the ancestral home of the human race, a planet which has faded into legend - Earth. Trevize, a councilman, is seeking justification for his decision to embrace the hive-mind Galaxia method, and as Trevize and Pelorat travel across the galaxy they learn not only about humanity's past, but its possible future.
In Foundation and Empire, a science fiction novel and the fourth book in the Foundation series, the emperor of the Galaxy has deemed the Foundation a threat, and has sent forces to attack it. Though the foundation emerges victorious from their engagement with the Empire, they soon must face another threat: the Mule, a mutant slowly taking over unsuspecting planets. This crisis sparks a search for the Second Foundation, now the only hope for humanity's future.
Foundation's Edge, a science fiction novel and the sixth book in the Foundation series, tells the story of Golan Trevize and Janov Pelorat, who have been sent by the Mayor to discover the location of the Second Foundation. When they come across the planet Gaia, where every being is connected through a hive mind, they must make an important decision about humanity's future. Their choice is complicated by Harla Branno and Stor Gendibal, two people who have followed Trevize and Pelorat on their mission looking to use the pair's discoveries for their own purposes.
Second Foundation is the story of the telepathic warlord known as The Mule and of the society of scientists, archivists, and clerks known as the Foundation. The book deals with the impact of exceptional individuals on huge groups of people, typified by The Mule's ability to alter the emotions of those in his surroundings. The novel also shows the curation of history by groups of the powerful, calculating, and oppressive.