More like It's All True

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Stranger in a Strange LandNovel
Robert A. Heinleinstandalone novel1961
First contact, about aliens and faith and religion, set in near future.
Childhood's EndNovel
Arthur C. Clarkestandalone novel1953
First contact, bittersweet in tone, about aliens, set in near future.
The Man Who Folded HimselfNovel
David Gerroldstandalone novel1973
About loneliness.
GodbodyNovel
Theodore Sturgeonstandalone novel1986
Emotional in tone, about gods and faith and religion.
More Than HumanNovel
Theodore Sturgeonstandalone novel1953
About psychic powers and found family.
“Science fiction critic and editor David Pringle included it in his book Science Fiction: The 100 Best Novels.”
from the catalogue
Dying InsideNovel
Robert Silverbergstandalone novel1972
Sad in tone, about psychic powers and loneliness, set in big city.