What was the name of C.S. Lewis’s Christian allegorical novel published in 1933?

C.S. Lewis’s Christian allegorical novel published in 1933 was The Pilgrim’s Regress. Its subtitle, An Allegorical Apology for Christianity, Reason and Romanticism, signals the book’s purpose: to present Lewis’s intellectual and spiritual journey through symbolic fiction.

The novel follows John, who leaves his home in search of an appealing but poorly understood object called the Island. During his journey he encounters characters and places representing ideas, philosophies, temptations, and forms of religious belief. The structure deliberately recalls John Bunyan’s The Pilgrim’s Progress.

Lewis wrote the book soon after his return to Christian belief. It was his first published work of fiction, though it did not achieve the immediate popularity of the later Narnia novels. The allegory is more explicitly philosophical and theological than Lewis’s children’s fiction, and modern readers often find its historical references easier to understand with explanatory notes.