What a great thread! So many people have mentioned books I’ve enjoyed and forgotten, and I’ve put others on my Amazon wish list.
I’m looking around the 3,000 + volumes in my apartment, and trying to choose some that I think are more than just idisyncratic favorites. I’ll try not to list the same ones others mentioned:
Love Poems from God: Twelve Sacred Voices from East and West, edited by Daniel Ladinsky. Some lovely word packets and images that make fireworks in the mind
The Riddle-Master of Hed, by Patricia McKillip. A fine fantasy evocation of how a person can evolve into something like a god.
The entire Discworld series, by Terry Pratchett. Because it covers every topic of interest to humans, with satiric insight softened with compassion, and humor. Oh, all right, someone else has mentioned them already, and they references to current events and fads will make them go out of date faster than some others, but dang! they are good.
Loving What Is, by Byron Katie. Simple psychological technique that changes everything, that ends suffering for those who use it. Totally secular way to get to the same goal most religions have at their heart, before they get corrupted by power-seekers.
The Lord of the Rings, by JRR Tolkien. Okay, it’s been mentioned. But I’ve reread it more than any other book, and it has the capacity to transport me entirely from this world into its own. It teaches the lessons of self-sacrifice, the struggle with temptations and with one’s own lower self, and love of others, with great beauty and with passion. So I have to include it.