Which C.S. Lewis work, published in 1936, studies Christian symbolism in medieval literature?

The Allegory of Love, published in 1936, studies Christian symbolism and allegorical love in medieval and Renaissance literature.

The book was one of Lewis’s major early scholarly works. Its subtitle, A Study in Medieval Tradition, signals its focus on the historical development of allegorical writing rather than on modern romance. Lewis examines how writers represented abstract ideas and emotional experiences through personification, narrative and symbolic figures.

The work helped establish his reputation as a literary scholar before his most famous popular fiction and apologetics appeared. It also illustrates Lewis’s broad interests: classical and medieval texts, theology, poetic imagination and the relationship between literary form and intellectual history.

The book is sometimes confused with The Discarded Image, Lewis’s later study of the medieval worldview, or with his collection Studies in Words. Those works are related to his academic interests, but The Allegory of Love is the specific 1936 study of medieval allegorical tradition.