Splintered Light: Logos and Language in Tolkien's World is an 1983 book of literary criticism by the leading Tolkien scholar Verlyn Flieger, in which she argues that light is a central theme of Tolkien's Middle-earth mythology, in particular in The Silmarillion. It has been admired by other scholars to the extent that it has become a core element of Tolkien scholarship.
Splintered Light
The Silmarillion is a book consisting of a collection of myths and stories in varying styles by the English writer J. R. R. Tolkien. It was edited and published posthumously by his son Christopher Tolkien in 1977, assisted by Guy Gavriel Kay, who became a fantasy author. It tells of Eä, a fictional universe that includes the Blessed Realm of Valinor, the ill-fated region of Beleriand, the island of Númenor, and the continent of Middle-earth, where Tolkien's most popular works—The Hobbit and The Lord of the Rings—are set. After the success of The Hobbit, Tolkien's publisher, Stanley Unwin, requested a sequel, and Tolkien offered a draft of the writings that would later become The Silmarillion. Unwin rejected this proposal, calling the draft obscure and "too Celtic", so Tolkien began working on a new story that eventually became The Lord of the Rings.
Artistic response to The Silmarillion: Fëanor threatens Fingolfin, by Tom Loback, 2007
Tolkien went to great lengths to present his work as a collection of documents "within the fictional world", including preparing facsimile pages from The Book of Mazarbul to support the story and bring readers into his fantasy.