But Williams is better remembered as a writer, of poetry, novels, drama, criticism, and biographies. His best known works are his extremely dense and complex Arthurian poetry (in two books, Taliessin through Logres and The Region of the Summer Stars), and his seven novels of Christian mysticism, in which intense spiritual matters infuse their way into the modern world. Yet they are not horror, but fantasy. Modern writers of fantasy with contemporary settings, notably Tim Powers, cite Williams as a model and inspiration.
Williams gathered many followers and disciples during his lifetime. He was for a period a member of an offshoot of the Hermetic Order of the Golden Dawn. During his time in Oxford, he belonged to a purely literary group, The Inklings.
Williams's novels are:
He also wrote several non-fiction works of theology: