Gor is the fictional setting for a series of sword and planet novels written by philosophy professor John Lange, writing as John Norman. The setting was first described in the 1966 novel Tarnsman of Gor. The series is inspired by science fantasy pulp fiction works by Edgar Rice Burroughs (such as the "Barsoom" series). It also includes erotica and philosophy content. The Gor series repeatedly depicts men abducting and physically and sexually brutalizing women, who grow to enjoy their submissive state. According to "The Encyclopedia of Science Fiction," Norman's "sexual philosophy" is "widely detested", but the books have inspired a Gorean subculture.