Asimov wrote or edited more than 500 volumes and an estimated 90,000 letters or postcards, and he has works in every major category of the Dewey Decimal System except Philosophy. Asimov is widely considered a master of the science-fiction genre and, along with Robert A. Heinlein and Arthur C. Clarke, was considered to be one of the “Big Three” science-fiction writers during his lifetime. Asimov’s most famous work is the Foundation Series; his other major series are the Galactic Empire series and the Robot series, both of which he later tied into the Foundation Series.
What is often lacking in the Valley is philosophy — we will find ideology, but rarely philosophy.