Valis : Valis, Book 1 (Valis)

It began with a blinding light, a divine revelation from a mysterious intelligence that called itself VALIS. And with that, the fabric of reality was ripped open and laid bare so that anything seemed possible, but nothing seemed quite right.
Part science fiction, part theological detective story in which God plays both the missing person and the perpetrator of the ultimate crime, VALIS is both disorienting and eerily funny, and a joy to read.
The first book in Philip K. Dick's defining trilogy, Valis is a disorienting and bleakly funny novel about a schizophrenic man named Horselover Fat (who just might also be known as Philip Dick); the hidden mysteries of Gnostic Christianity; and reality as revealed through a pink laser. Part science fiction, part theological detective story in which God plays both the missing person and the perpetrator of the ultimate crime, VALIS is both disorienting and eerily funny, and a joy to read.