What title did C.S. Lewis give his 1933 Christian allegory about a pilgrimage?

C.S. Lewis titled his 1933 Christian allegory The Pilgrim’s Regress.

The full title is The Pilgrim’s Regress: An Allegorical Apology for Christianity, Reason and Romanticism. It follows a character named John on a journey toward a distant island, encountering figures and places that represent philosophical, cultural, and religious positions.

Lewis wrote the book after his return to Christian belief. Its title deliberately recalls John Bunyan’s The Pilgrim’s Progress, but Lewis’s allegory addresses modern intellectual debates rather than simply retelling the structure of Bunyan’s seventeenth-century classic.

The book’s original subtitle signals its main concerns: Christianity, reason, and romantic longing. Lewis later acknowledged that some of its symbolism was difficult for readers to interpret. The work is distinct from The Great Divorce, another Lewis allegorical fantasy, which was published in 1945 and concerns a journey from a grey afterlife setting.