Which C.S. Lewis book examines affection, friendship, eros, and charity?

The Four Loves examines affection, friendship, eros, and charity in C.S. Lewis’s writing.

The book was published in 1960 and developed from a BBC radio series broadcast in 1958. Lewis discusses four Greek terms or categories of love: storge, associated with natural affection; philia, associated with friendship; eros, associated with romantic love; and agape, associated with self-giving love.

The book is not a simple ranking of four emotions. Lewis explores how each kind of love can be generous but can also become possessive or distorted when treated as an ultimate good. The work combines literary examples, Christian theology, and observations about ordinary relationships. Its title is sometimes confused with Lewis’s apologetic works, but its central subject is the structure and dangers of human love.