For the rest of your long, solitary life (there's food aplenty on this island, and you're the apex predator), you have only the written catalog of a single author to keep you company. Whose work do you take? For the purposes of this thread, books written by two or more authors together count as part of each author's catalog.
For me, it would be Stephen King, winning out narrowly over Tolkien, Herbert, Maugham, and a few others. He isn't my favorite author, but he has the winning blend of entertainment value, serious literary work, and sheer volume of written catalog, to keep me entertained for a long time.
Who's yours?