Damon Knight 
Natural State [EPUB ebook] 

A collection of cutting-edge SF stories from one of the grand masters of science fiction, including:Rule Golden To protect the galaxy, Aza-Kra came from a world where violence and cruelty ceased to exist. To him, Earth was a jungle.The Dying Man In a century that holds the secret of immortality, Claire and Dio find love impossible – until Dio discovers he is mortal.Natural State AD 2064. Were the cities doomed? Were the plants and animals and people who lived outside more efficient than any machine that could be built? Alvah Gustad, actor and patriot, leaves New York for an unusual mission.