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Was it you who talked about Rene Barjavel's The Ice People several years back here?
I ended up convincing a friend to buy a second hand copy off some foreign Amazon site (they were not active in India then and still don't sell second hand books) and bring it to me the next time they came. I rather enjoyed it, although the ending was sad. So thanks a lot for the (much) earlier recommendation.
I also liked:
Clifford Simak - City.
Arthur C Clarke - Rendezvous with Rama.
Hal Clement - Mission of Gravity.
The Moon Is A Harsh Mistress and Time Enough For Love by Robert A. Heinlein The Chanur Saga and The Foreigner Sequence by C. J. Cherryh; oh hell, all of her science fiction is good
The Bolo books by Keith Laumer and his successors
The Old Man's War series by John Scalzi Oath of Fealty by Larry Niven and Jerry Pournelle Roadmarks by Roger Zelazny Childhood's End by Arthur C. Clarke Footfall by Larry Niven and Jerry Pournelle
These are all books that I re-read time and again. I have had to ration myself how often I go back to them so that they don't get stale.
In no particular order:
The Foundation series (Isaac Asimov)
The Robot books (Isaac Asimov)
Dragon's Egg & its sequel Starquake (Robert L. Forward)
Rocheworld & its sequels (Robert L. Forward)
Camelot 30K (Robert L. Forward)
The Dune series (Frank Herbert)
Ringworld and its sequels (Larry Niven)
Rama (but not the sequels) (Arthur C. Clarke)
Some of Harry Turtledove's alternate history books
The Mesklin series (Hal Clement)
The Riverworld series (Philip Jose Farmer)
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
I like some fantasy, LotR included. I no longer have the patience though to read the 1,000 page paperbacks with countless subplots, author-created pseudo-languages, and the quests that take 15 or 20 books to resolve. My preference nowadays is for urban fantasy from authors like A. Lee Martinez[^], N. K. Jemisin[^], and Jim Butcher[^].