C.S. Lewis said that he converted to Christianity in 1931. His return to religious belief developed over several years, beginning with a renewed belief in God and eventually leading to his embrace of Christianity.
Lewis described important conversations with fellow writers J.R.R. Tolkien and Hugo Dyson in September 1931. Their discussions about myth, Christianity, and the meaning of Christ helped shape Lewis’s understanding, although his conversion was also the result of a longer personal and intellectual process.
The year is sometimes confused with 1929, when Lewis described himself as becoming a theist, or with 1930, another important stage in his religious development. His later apologetic books, including Mere Christianity, drew on this intellectual and spiritual journey.