Here's a quick list of books I've enjoyed, in alpha order.
Note: I bias toward the humorous, humane and irreverent; mystical and military.
1984 by George Orwell.
Afterparty by Daryl Gregory.
Ancillary Justice by Ann Leckie.
Autobiography of Yogi by Paramahansa Yogananda. Caveat: this book was written for a Christian audience in the 1950s; Fourth Uncle in the Mountain provided helpful normalization.
The Big Sleep by Raymond Chandler.
Brave New World by Aldous Huxley.
The Botany of Desire by Michael Pollan.
Dune by Frank Herbert.
Fahrenheit 451 by Ray Bradbury.
Fourth Uncle in the Mountain, by Marjorie Pivar and Quang Van Nguyen.
All three Germline books by T.C. McCarthy.
A Heaven in the Eye by Clyde Rice.
Housewife's Handbook on Selective Promiscuity by Rey Anthony and Toni Savant.
How to Change Your Mind by Michael Pollan.
The Invincible by Stanislaw Lem.
Prey by Michael Crichton.
Starship Troopers by Robert Heinlein.
The Ramayana by Tulsidas.
Tibet's Great Yogi Milarepa by W.Y. Evans-Wentz.
The Urban Homestead by Kelly Coyne and Erik Knutzen. Pairs well with Wild Fermentation.
Why We Make Things and Why It Matters by Peter Korn.
Wild Fermentation by Sandor Katz.