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Speculative Fictions
Last And First Men (S.F. Masterworks)Last And First Men (S.F. Masterworks) by Olaf Stapledon
Buy new: £4.99 / Used from: £0.58
ethics explored through future history
Timescape (S.F. Masterworks)Timescape (S.F. Masterworks) by Greg Benford
Buy new: £6.97 / Used from: £0.14
about time-travel, research environments, and global disaster
Black Easter, or Faust Aleph-Null (Penguin science fiction)Black Easter, or Faust Aleph-Null (Penguin science fiction) by James Blish
Buy used from: £13.51
allegory on the perils of forbidden knowledge
MemoryMemory by Lois McMaster Bujold
Buy used from: £0.01
identity explored; both funny and moving
CyteenCyteen by C.J. Cherryh
Buy used from: £0.45
cloning, psychological manipulation and political wickedness in Cherryh's Merchanter Universe
The Man In The High Castle (S.F. Masterworks)The Man In The High Castle (S.F. Masterworks) by Philip K. Dick
Buy used from: £13.67
alternate history, and moral courage
Shikasta: Re-colonised Planet 5 (Canopus in Argos)Shikasta: Re-colonised Planet 5 (Canopus in Argos) by Doris May Lessing
Buy used from: £1.46
pastiche sf: the Bible (and other things) as space opera
That Hideous Strength (Voyager Classics)That Hideous Strength (Voyager Classics) by C. S. Lewis
Buy used from: £0.97
fictional reworking of Lewis's Abolition of Man; often prescient
Voyage to Arcturus (Fantastic fiction library)Voyage to Arcturus (Fantastic fiction library) by David Lindsay
Buy used from: £1.03
Manichaeanism seen through imaginary biologies
The Humanoids (Sphere science fiction)The Humanoids (Sphere science fiction) by Jack Williamson
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marvellously ambiguous study of an ideal society
The Final Encyclopaedia (Sphere science fiction)The Final Encyclopaedia (Sphere science fiction) by Gordon R. Dickson
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flawed but moving study of human possibilities and the need for everyone to be a god
Little, Big (Fantasy Masterworks)Little, Big (Fantasy Masterworks) by John Crowley
Buy used from: £15.95
rich exploration of obsession, fairyland and time
PastwatchPastwatch by Card Orson Scott
Buy new: £4.19 / Used from: £0.01
how history should have been,and perhaps will (?) be
Past MasterPast Master by R.A. Lafferty
Buy used from: £5.70
challenging Utopia
Lud-In-The-MistLud-In-The-Mist by Hope Mirrlees
Buy new: £4.99 / Used from: £0.95
truth, dreams and the nature of human law; see http://www.infinityplus.co.uk/introduces/mirrlees.htm
The Mote in God's EyeThe Mote in God's Eye by Larry Niven
Buy used from: £8.11
ignore the misogyny and enjoy a complex first contact novel
QuarantineQuarantine by Greg Egan
Buy used from: £1.20
ideas more than character, as in every Egan
Reality Dysfunction (Night's Dawn Trilogy)Reality Dysfunction (Night's Dawn Trilogy) by Peter F Hamilton
Buy new: £6.48 / Used from: £0.01
the first part of a massive space opera, naturalizing folk-religion
AegyptAegypt by John Crowley
Buy used from: £8.56
first of a foursome, dealing with history, Bruno, John Dee, angels....
Across RealtimeAcross Realtime by Vernor Vinge
Buy used from: £3.40
introducing the Singularity: the moment beyond which we cannot extrapolate our future!
The Golden AgeThe Golden Age by John C. Wright
Buy new: £6.99 / Used from: £0.34
the first part of a highly intelligent and philosophically interesting space opera
The Probability BroachThe Probability Broach by L.Neil Smith
Buy new: £11.99 / Used from: £7.15
the first and best of his Libertarian alternate histories