Isaac Asimov

Isaac Asimov ( AZ-im-ov; c. January 2, 1920 – April 6, 1992) was an American writer and professor of biochemistry at Boston University. During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. Heinlein and Arthur C. Clarke. He wrote or edited more than 500 books. He also wrote an estimated 90,000 letters and postcards.