We may enjoy the characters and plot of Tolkien’s stories, but his passion was really in creating languages. Philip Seargeant has written an interesting article on this topic.
J.R.R. Tolkien began writing The Fall of Gondolin while on medical leave from World War I, 100 years ago this month. It is the first story in what would become his legendarium—the mythology that underpins The Lord of the Rings. But behind the fiction was his interest in another epic act of creation: the construction of imaginary languages.
You can read the full article here.