'one of the most skilful pastiches in the history of literature. An amazing piece of work, whomever did it'." Disliking arguments with John W. Campbell over editorial decisions, after 1950 Sturgeon only published one story in Astounding. Sturgeon wrote the screenplays for the Star Trek: The Original Series episodes "Shore Leave" (1966) and "Amok Time" (1967, written up and published as a Bantam Books "Star Trek Fotonovel" in 1978). The latter featured the first appearance of pon farr, the Vulcan mating ritual, the sentence "Live long and prosper" and the Vulcan hand symbol. Sturgeon also wrote several Star Trek scripts that were never produced. One of these first introduced the Prime Directive. He also wrote an episode of the Saturday morning show Land of the Lost, "The Pylon Express", in 1975. Two of Sturgeon's stories were adapted for The New Twilight Zone. One, "A Saucer of Loneliness", was broadcast in 1986 and was dedicated to his memory. Another short story, "Yesterday was Monday", was the inspiration for The New Twilight Zone episode "A Matter of Minutes". His 1944 novella "Killdozer!" was the inspiration for the 1974 made-for-TV movie, Marvel comic book, and alternative rock band of the same name, as well as becoming the colloquial name for Marvin Heemeyer's 2004 bulldozer rage incident. Sturgeon published the "first stories in science fiction which dealt with homosexuality, 'The World Well Lost' [June 1953] and 'Affair With a Green Monkey' [May 1957]", and sometimes put gay subtext in his work, such as the back-rub scene in "Shore Leave", or in his Western story, "Scars". Though not as well known to the general public as contemporaries like Isaac Asimov or Ray Bradbury, Sturgeon is well known among readers of mid-20th-century science fiction anthologies. At the height of his popularity in the 1950s he was the most anthologized English-language author alive. Three Sturgeon stories were adapted for the 1950s NBC radio anthology X Minus One: "A Saucer of Loneliness" (broadcast twice}, "The Stars Are The Styx" and "Mr. Costello, Hero". Carl Sagan described "To Here and the Easel" as "a stunning portrait of personality disassociation as perceived from the inside", and further said that many of Sturgeon's works were among the "rare few science‐fiction novels [that] combine a standard science‐fiction theme with a deep human sensitivity". John Clute wrote in The Encyclopedia of Science Fiction: "His influence upon writers like Harlan Ellison and Samuel R.