Which C.S. Lewis book collects his reflections on love in four forms?

C.S. Lewis’s book The Four Loves examines four forms of human love.

Published in 1960, the work developed from a series of BBC radio broadcasts. Lewis discusses affection, friendship, erotic love, and charity, using the Greek terms storge, philia, eros, and agape to distinguish them. The book combines literary examples, philosophical reflection, and Christian theology.

Lewis does not present the four categories as isolated emotions that never overlap. Instead, he explores how natural loves can be valuable while also becoming possessive or distorted. Charity, or agape, is presented as divine love that can transform and order the other loves.

The book is often confused with The Allegory of Love, Lewis’s earlier academic study of medieval literature. It is also different from Mere Christianity, which grew from wartime broadcasts about Christian belief rather than from a focused discussion of love.