Damon Knight, founder and first president of the Science Fiction Writers of America, has died.

From the SFWA.org obituary: He was "the first reviewer to subject science fiction to the standards of ambitious mainstream fiction." He was one of the Futurians, a group of writers and fans that included Isaac Asimov, Frederik Pohl, and others. He wrote "the founding document of modern SF criticism," In Search of Wonder.

Knight founded the Milford series of writing workshops with Judith Merrill and James Blish. That led to the Clarion SF and Fantasy Writers' Workshop.

Among other works, he wrote "To Serve Man," a story that was later adapted into a famous Twilight Zone episode.