C. S. Lewis
After his conversion to theism in 1929, Lewis converted to Christianity in 1931, following a long discussion and late-night walk with his close friends Tolkien and Hugo Dyson. He records making a specific commitment to Christian belief while on his way to the zoo with his brother. He became a member of the Church of England – somewhat to the disappointment of Tolkien, who had hoped that he would join the Catholic Church.
C. S. Lewis
Lewis's interest in the works of George MacDonald was part of what turned him from atheism. This can be seen particularly well through this passage in Lewis's "The Great Divorce", chapter nine, when the semi-autobiographical main character meets MacDonald in Heaven:
He eventually returned to Christianity, having been influenced by arguments with his Oxford colleague and Christian friend J. R. R. Tolkien, whom he seems to have met for the first time on 11 May 1926, and the book "The Everlasting Man" by G. K. Chesterton. Lewis vigorously resisted conversion, noting that he was brought into Christianity like a prodigal, "kicking, struggling, resentful, and darting his eyes in every direction for a chance to escape". He described his last struggle in "Surprised by Joy":