Foundation Books in Order

Hari Seldon's science of psychohistory predicts the Galactic Empire's collapse. He establishes a Foundation on distant Terminus to preserve knowledge and shorten the coming dark age, leaving successive generations to face crises involving religion, trade and political power.

The Foundation faces an ambitious general serving the declining Galactic Empire, then a mysterious conqueror called the Mule. As military power and an unpredictable individual threaten Seldon's plan, its defenders struggle to understand dangers psychohistory may not anticipate.

The Mule searches for the hidden Second Foundation, hoping to eliminate the force that might oppose him. Later, the First Foundation begins its own hunt, turning the fate of Seldon's plan into a contest of suspicion and mental power.

Exiled councilman Golan Trevize joins a historian in a search for the legendary planet Earth. Their journey also tests rumors that the Second Foundation survives, while another force appears to be influencing the galaxy’s future.

Uncertain about his decision concerning humanity's future, Golan Trevize searches for the long-lost planet Earth. Accompanied by historian Janov Pelorat and Bliss, he travels among unfamiliar worlds, seeking evidence that could explain his choice.

Hari Seldon arrives on Trantor to present his theory of psychohistory, which might predict humanity's future. Imperial interest in his work turns the young mathematician into a wanted man as he seeks to understand his theory's possibilities.

On Trantor, Hari Seldon works to turn psychohistory into a tool for predicting humanity's future as the Galactic Empire weakens. Political upheaval and personal losses complicate his effort to establish the foundations of a plan that could outlast him.