The Man from Earth is the final story written by the famous science fiction author Jerome Bixby. Probably best known for his episodes of the original Star Trek – though that is by no means his best work – he was truly one of the luminaries of the science fiction field. 
I have mixed feelings about his final story, which was filmed as a movie and is available on NetFlix as a streaming movie. Be warned, this ‘review’ is an analysis and will contain major spoilers. Stop reading and go watch the movie first if you have interest in seeing it without having the plot ruined.