What title did C.S. Lewis give his book about four kinds of love?

C.S. Lewis’s book about four kinds of love is titled The Four Loves. It was published in 1960 and developed from a BBC radio series broadcast in 1958.

Lewis discusses four Greek terms commonly used to distinguish forms of love: affection, friendship, erotic love, and charity. In the book, these are associated with the words storge, philia, eros, and agape, although Lewis presents them for a general reading audience rather than as a technical ancient-language study.

The book examines how natural human loves can be valuable while also becoming possessive or distorted. Lewis argues that charity, understood as self-giving love, has a distinctive place in Christian thought.

The Four Loves is often confused with Mere Christianity because both grew from broadcast talks and address Christian themes. They are separate books with different structures and subjects.