In the year 2100, mankind on Earth, settlers in a lunar colony, and aliens from the para-universe (a strange universe parallel in time to our own) face a race against time as they try to prevent the total destruction of the Earth by the invention of an Inter-Universe Electron Pump.

The three laws of Robotics: 1) A robot may not injure a human being or, through inaction, allow a human being to come to harm. 2) A robot must obey orders given to it by human beings except where such orders would conflict with the First Law. 3) A robot must protect its own existence as long as such protection does not conflict with the First or Second Law. With these three, simple directives, Isaac Asimov changed our perception of robots forever...

Detective Elijah Baley--from The Naked Sun and Caves of Steel--is sent to Aurora to solve the murder of a humaniform robot.

Subjected to mind erasure because he warns of impending disaster on the planet Florina, the earthman Rik battles unknown foes and memory loss to avert mass destruction.

At last, the costly and bitter war between the two Foundations had come to an end. The scientists of the First Foundation had proved victorious; and now they retum to Hari Seldon''s long-established plan to build a new Empire that the Second Foundation is not destroyed after all-and that its still-defiant survivors are preparing their revenge. Now the two exiled citizens of the Foundation-a renegade Councilman and the doddering historian-set out in...

"The Foundation lies in ruins--destroyed by a mutant mind bent on humanity's annihilation. But it's rumored that there's a Second Foundation hidden somewhere at the end of the Galaxy, established as insurance to preserve the knowledge of mankind. Now a desperate race has begun between the survivors of the First Foundation and an alien entity to find this last flicker of humanity's shining past--and future hope. Yet the key to it all might be a fourteen-year-old...

When young Hari Seldon arrives on Trantor, he is unaware of the perilous politics that are brewing. After he presents his paper on psychohistory, he becomes the most wanted man in the Empire. A prequel to the original Foundation trilogy (Foundation, Foundation and Empire, Second Foundation).

Gold is the final and crowning achievement of the fifty-year career of science fiction's transcendent genius, the world-famous author who defined the field of science fiction for its practitioners, its millions of readers, and the world at large. The first section contains stories that range from the humorous to the profound, at the heart of which is the title story, "Gold," a moving and revealing drama about a writer who gambles everything on a...

Robot Dreams spans the body of Asimov's fiction from the 1940s to the mid-80s, and features classic Asimovian themes, from the scientific puzzle to the extraterrestrial thriller, all introduced in an exclusive essay written especially for this collection.