Ulysses by James Joyce is not a holy book in the traditional sense, but I have chosen to post it here because of my admiration of the work. I also think that many of this sites friends would find it interesting. For more information on Ulysses please read the Wiki article.
I found this photo of Marilyn Monroe reading Ulysses from 1954. The photographer, Eve Arnold, was preparing his camera and Marilyn was just waiting around with her book. Marilyn later said that Ulysses was giving her trouble and because it was so hard she only read bits and pieces at a time, but she also liked to read certain parts of it out loud.
Do like Marylin, read Ulysses, download it here (492 pages):