Twenty-three of the finest science fiction short stories from one of the genre's greatest writers, Isaac Asimov. Isaac Asimov was the Grand Master of the Science Fiction Writers of America, the founder of robot ethics, and one of the world's most prolific authors of fiction and non-fiction. Asimov's short fiction has been enjoyed by millions for more than half a century. Within this collection are stories often voted among the best science fiction stories of all time, including 'Nightfall', where the world of Lagash, illuminated by six suns, is suddenly plunged into complete darkness and utter madness. From a founding father of science fiction, this is an unsurpassed showcase of Asimov's storytelling talent.