The Silmarillion by J.R.R. Tolkein because there’s no fucking way in hell I will ever finish that shit
Probably The Lord of the Rings. I read the entire thing almost ten years ago, and only remember bits and pieces. It’s so long that I could definitely read it multiple times and still learn new information every time I read it.
Agreed, but that is three books. If one book was a strict requirement, I would go for silmarillion.
Hitchhikers Guide to the Galaxy; the five-part trilogy if that can count, but even if I was just stuck with the first one it’d be worth it.
I have the “Triology” as an old omnibus that I bought second hand. It’s huge and very unpractical to read, but it does have all 5 parts in one book.
I’d take that or Steven Kings The Dark Tower series which I actually have as one long epub file that contains the complete series. That counts as one book too, right?
I just need as much as possible to read.
The count of Monte Christo
Long enough that by the time you were finished, you could return to the beginning and not get bored.
Alternatively, since it is so serialized, you could read individual chapters/sections and have a satisfying story conclusion. But nothing compares to the way all of the arcs come together for the final conclusion.