Fifteen fiction stories, 18 non-fiction and 20 essays on the craft of writing science fiction. One of the fiction pieces is Cal, on a robot who wants to be a writer. His owner, a writer, agrees to program him for the task, but when the robot outdoes the writer in his craft, switches him off.

A collection of twenty classic short stories by Isaac Asimov, author of the Foundation series, featuring the definitive version of "Nightfall". From one of history's most influential writers of science fiction comes this collection of twenty short works of fiction, arranged in order of publication from 1941 to 1967. Compiled by Asimov himself, who prefaced each story with an introduction.

A collection of all of Isaac Asimov's robot stories, including some which have never before appeared in book form.