Time and Again by Clifford D. Simak

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After years in space, a man returns to Earth as something new and not completely human, in this “enormously inventive” novel by a Nebula Award winner (Galaxy Science Fiction).

Twenty years ago, Asher Sutton vanished somewhere in the star system 61 Cygni, an inaccessible corner of the universe that humankind has thus far been unable to explore. Now Asher has returned to Earth, having impossibly survived catastrophic damage to his spacecraft. But the star-traveler is not the same man he was when he began his journey two decades earlier. He is, in fact, no longer completely human. And he isn’t alone. But he has a message to convey that could have reality-altering consequences for the human galaxy-conquerors who consider themselves almost gods, and for the nearly human androids they create, enslave, and oppress. It is Asher’s destiny to change everything. His mission has made him a hero to some, a pariah to others—and a target for determined time-traveling assassins from the future whose mission it is to silence him at all costs before everything they cherish is obliterated.
A true science fiction visionary, SFWA Grand Master Clifford D. Simak infused thrilling stories of time travel, space exploration, artificial intelligence, and alien contact with powerful, thought-provoking ideas. An enthralling masterwork of speculative fiction that astonishes while exploring humanity in all its disparate aspects, Time and Again can be counted among the prolific, multiple Hugo and Nebula Award–winning author’s most brilliantly imagined and successfully realized creations.

About Clifford D. Simak

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Simak's distinguished career as a science fiction writer spanned 50 years; he has been called the dean of science fiction writers. His first story, "The World of the Red Sun," was published in 1931, in the early years of the development of the genre. Simak studied journalism and worked as a reporter, but his main love was always science fiction. He often used, in fantasy form, his own boyhood Wisconsin landscape. The critic Thomas D. Clareson notes that, "Simak seems to have realized that, aesthetically, the use of the village-rural midwestern setting not only ties his work to the main body of American fiction but also helps his reader to make the necessary transition from a familiar, everyday world to the unknown world or worlds of science fiction.
Published December 1, 2015 by Open Road Media Sci-Fi & Fantasy. 231 pages
Genres: Science Fiction & Fantasy, Action & Adventure, Religion & Spirituality, Literature & Fiction, Romance. Fiction

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You can page Einstein for an explanation of a new enigma- the fifth, or time, dimension.

Mar 16 1951 | Read Full Review of Time and Again