I don't know.
I've read a lot of books that I didn't understand that well yet seemed to contain great and wise truth. Sometimes I've read them again. And again. And still didn't really understand them all that well.
Here are a few of my favorite difficult reads:
Antifragile: Things that Gain from Disorder
At the Existentialist Cafe
Chemistry: A Novel by Weike Wang
Lincoln in the Bardo
The Gold Bug Variations
Colorless Tsukuru Tasaki and anything else by Haruki Murakami
Penguin Anthology of Twentieth Century Poetry
Zen and Zen Classics
Dreamers by Knut Hamsen
Meditations on the Parables of Jesus
Zen and the Art of Motorcycle Maintenance
Top Ten Tuesday is an original feature/weekly meme created at The Broke and the Bookish. This feature was created because we are particularly fond of lists here at The Broke and the Bookish. We'd love to share our lists with other bookish folks and would LOVE to see your top ten lists!