Tolkien's literary career flourished with The Hobbit (1937), the tale of Bilbo Baggins's unexpected adventure, which became an instant success. Encouraged by its reception, he developed a far grander epic, The Lord of the Rings (1954–1955), chronicling the quest to destroy the One Ring. Both works are set in Middle-earth, a richly imagined world underpinned by Tolkien's invented languages, elaborate mythologies, and detailed histories.
After his death, his son Christopher edited and published many unfinished works, including The Silmarillion (1977), Unfinished Tales (1980), and The Children of Húrin (2007). Tolkien is widely celebrated as the father of modern fantasy literature.