VALIS is a 1981 science fiction novel by Philip K. Dick. The title is an acronym for Vast Active Living Intelligence System, Dick’s gnostic vision of one aspect of God. VALIS is the first book in the VALIS Trilogy of novels including The Divine Invasion (1981), and the unfinished The Owl in Daylight. VALIS represents Dick’s last major work before he died.
The major subject of these dialogues is spirituality, as Dick/Fat is ostensibly obsessed with several religions and philosophies, including Christianity, Taoism, Gnosticism and Jungian psychoanalysis, in the search for a cure for what he believes is simultaneously both a personal and a cosmic wound. Near the end of the book the messianic figure appears, incarnated in the young child Sophia (a name associated with Wisdom in many Gnostic texts, literally meaning “wisdom” in Greek).
Site – http://en.wikipedia.org