C. S. Lewis 
Discarded Image 
An Introduction to Medieval and Renaissance Literature

In The Discarded Image, C.S. Lewis paints a lucid picture of the medieval world view, providing the historical and cultural background to the literature of the Middle Ages and Renaissance. It describes the image discarded by later years as the medieval synthesis itself, the whole organization of their theology, science and history into a single, complex, harmonious mental model of the universe. This, Lewiss last book, has been hailed as the final memorial to the work of a great scholar and teacher and a wise and noble mind.