Written with the brillant pen of one of science fiction's masters in the art, Isaac Asimov has collected a plethora of writings around the subject of the genre he wrote in all his life. pulled from his time writing for Astounding Stories, during the Golden Age of sci fi, his priviledged perspective on the topic is compiled in clear and concise chapters with subjects ranging from his thoughts on other writers like Aurthur C. Clark, and the differences between sci fi and fantasy.