The Foundation Series

The Foundation Series is an epic science fiction series written over a span of forty-four years by Isaac Asimov. It consists of seven volumes that are closely linked to each other, although they can be read separately. The term 'Foundation Series' is often used more generally to include the Robot Series and Empire Series, which are set in the same fictional universe. In total there are fourteen novels and dozens of short stories written by Asimov, and six novels written by other authors after his death. The series is highly acclaimed, winning the one-time Hugo Award for "Best All-Time Series" in 1965.
See more at Wikipedia.org...