Franklin Patrick Herbert, Jr. (October 8, 1920 – February 11, 1986) was a critically acclaimed and commercially successful American science fiction author. Although also a short story author, he is best known for his novels, most notably Dune and its five sequels. The Dune saga, set in the distant future and taking place over millennia, deals with themes such as human survival and evolution, ecology, and the intersection of religion, politics and power. Dune itself is the "best-selling science fiction novel of all time," and the series is widely considered to be among the classics in the genre.