The Lord of the Rings is a high fantasy epic written by philologist and University of Oxford professor J. R. R. Tolkien. The story began as a sequel to Tolkien's earlier, less complex children's fantasy novel The Hobbit (1937), but eventually developed into a much larger work. It was written in stages between 1937 and 1949, much of it during the Second World War. It is the second best-selling novel ever written, with over 150 million copies sold.
The title of the novel refers to the story's main antagonist, the Dark Lord Sauron, who had in an earlier age created the One Ring to rule the other Rings of Power as the ultimate weapon in his campaign to conquer and rule all of Middle-earth. From quiet beginnings in the Shire, a Hobbit land not unlike the English countryside, the story ranges across north-west Middle-earth, following the course of the War of the Ring through the eyes of its characters, notably the Hobbits Frodo Baggins, Samwise "Sam" Gamgee, Meriadoc "Merry" Brandybuck and Peregrin "Pippin" Took, but also the Hobbits' chief allies and travelling companions: Aragorn, a Human Ranger, Boromir, a Human nobleman, Gimli, a Dwarf warrior, Legolas, an Elven prince, and Gandalf, a Wizard.
Tolkien's work has been the subject of extensive analysis of its themes and origins. Although a major work in itself, the story was only the last movement of a larger epic Tolkien had worked on since 1917, in a process he described as mythopoeia. Influences on this earlier work, and on the story of The Lord of the Rings, include philology, mythology, religion and the author's distaste for the effects of industrialization, as well as earlier fantasy works and Tolkien's experiences in World War I.