Which C.S. Lewis book was published posthumously in 1964 and studies the medieval worldview?

The Discarded Image was published posthumously in 1964 and studies the medieval worldview.

The book’s full title is The Discarded Image: An Introduction to Medieval and Renaissance Literature. It grew out of Lewis’s academic work and explains the intellectual model that shaped much medieval and Renaissance writing, including ideas about the cosmos, nature, hierarchy, and inherited authority.

Lewis died in November 1963, before the book was published. Its publication therefore followed his death, although the manuscript and underlying scholarship were completed during his lifetime.

The “discarded image” in the title refers to the older picture of the universe that modern people largely abandoned after scientific and intellectual changes. The book is not a biography of Lewis and does not primarily discuss his fantasy fiction, even though it helps explain the historical imagination behind some of his literary criticism.