I just finished my second Philip K. Dick novel in less than a month. The guy’s writing blows me away. It’s hard to believe he did most of his work in the 1950s and 60s. 

Also of note, something most critics have missed, The Three Stigmata of Palmer Eldritch* is in many ways, a story about two dueling magicians. An excellent examination of the kind of hubris and paranoia a magus can suffer when they feel beset by enemies.

*You think this obvious symbolism in the antagonist’s last name would be a clue.