Isaac Asimov's Foundation Trilogy is one of the highwater marks of science fiction.The monumental story of a Galactic Empire in decline and a secret society of scientists who seek to shorten the coming Dark Age with tools of Psychohistory, Foundation pioneered many themes of modern science fiction.Now, with the approval of the Asimov estate, three of today's most acclaimed authors have completed the epic the Grand Master left unfinished.

The Second Foundation Trilogy begins with Gregory Benford's Foundation's Fear, telling the origins of Hari Seldon, the Foundation's creator. Greg Bear's Foundation and Chaos relates the epic tale of Seldon's downfall and the first stirrings of robotic rebellion. Now, in David Brin's Foundation's Triumph, Seldon is about to escape exile and risk everything for one final quest-a search for knowledge and the power it bestows. The outcome of this final journey may secure humankind's future-or witness its final downfall...

Amazon.com Review
Isaac Asimov's 1951-53 Foundation trilogy is a rough-hewn classic of far future SF, honored with a unique 1965 Hugo for Best All-Time Series. It begins with "psychohistorian" Hari Seldon mapping the best possible course for humanity's next millennium, after the fall of the doomed Galactic Empire. Late in life Asimov revisited the series and awkwardly linked it with his popular robot stories--introducing vast conspiracy theories to explain the Empire's total lack of visible robots.

Asimov's estate authorized three SF notables to fill out Seldon's life in the Second Foundation Trilogy, which David Brin here wraps up after Gregory Benford's Foundation's Fear and Greg Bear's Foundation and Chaos. Chaos is the new keyword, because chaos theory seemingly makes nonsense of psychohistorical prediction. Whole planetary populations can lapse into chaotic rebellion despite secret mind-controlling agencies behind the scenes. So Seldon makes his last interstellar journey, harried, lectured, and even kidnapped by the warring factions of robots and not-quite-robots that have long manipulated humanity. The robots' dilemma:

"We are loyal, and yet far more competent than our masters. For their own sake, we have kept them ignorant, because we know too well what destructive paths they follow, whenever they grow too aware."

Brin does his best with Asimov's overcrowded legacy, skillfully steering Seldon to an insight about the much-foretold future that satisfies both the old man and the reader, with a spark of human free will and constructive chaos shining through the grayness of predestination. Asimov would have approved. --David Langford, Amazon.co.uk