Which 1936 C.S. Lewis book studies medieval and Renaissance love poetry?

The Allegory of Love is C.S. Lewis's 1936 study of medieval and Renaissance love poetry.

The book examines how allegorical love developed in European literature, beginning with medieval traditions and continuing into the Renaissance. Lewis discusses writers and works including Ovid, the Roman de la Rose, Edmund Spenser, and John Milton.

The study established Lewis's reputation as a major literary scholar. Its argument connects literary form with changing ideas about love, desire, morality, and imagination across historical periods.

The title can be confused with A Preface to Paradise Lost, another influential work of Lewis's literary criticism. That later book focuses specifically on Milton's epic rather than tracing the longer history of allegorical love.