 The Three Stigmata of Palmer Eldritch

"The Three Stigmata of Palmer Eldritch" is a science fiction novel written by Philip K. Dick, first published in 1965. The story is set in a dystopian future where Earth has become uninhabitable, and colonization of other planets is underway. The central themes revolve around the nature of reality, human perception, and the effects of drugs and altered states of consciousness.