Foundation and Empire

Foundation and Empire is a novel written by Isaac Asimov that was published by Gnome Press in 1952. It is the second book published in the Foundation Series, and the fourth in the in-universe chronology. It takes place in two halves, originally published as separate novellas.

Foundation and Empire saw multiple publications—it also appeared in 1955 as Ace Double (but not actually paired with another book) D-125 under the title "The Man Who Upset the Universe." The stories comprising this volume were originally published in Astounding Magazine (with different titles) in 1945. The publication of Foundation and Empire was preceded and followed by one each of two books of short stories were published shortly before and after, and decades later, Asimov wrote two further sequel novels and two prequels. Later writers have added authorized tales to the series. The Foundation Series is often regarded as one of Isaac Asimov's best works, along with his Robot series.