I am looking for a word that describes a book that is read again and again like a bible. A book that is often gone to, not for reference but for reminders[1]. Like a book of maxims, manifesto, or aphorisms.
[1]: Some books append "Bible" to describe a book that is often used for reference or comprehensive teaching. E.g: Programmer's bible or Linux bible. I am not referring to those.
To clarify: Reference is looking something [specific] up quickly for a task. The books I'm referring to are almost read in a ritual way without the purpose of finding specific information.