As good as a book can be -- a classic for all-time. Only bothering to rank it for the sake of consistency.
A masterpiece, one of the best things I've read. Highly recommended.
It's great, I love it. Recommended.
I liked it -- but I like books.
I liked it enough to finish it, but it didn't meet my expectations.
Rare that a book gets this rating -- I only finished because I felt it necessary.