http://www.thegreatcourses.com/courses/books-that-matter-the-city-of-god.html

Cheaper through Audible, plus the “notes” are the transcript of the lectures.

The less well-known sense is different and more surprising, since it might seem the opposite of the above. For if, in one way, Christendom is over, finished, in another way we have reached its end since so much of Christendom has been accomplished. Don’t look now, but we are living in the midst of a huge moral revolution lasting the past several centuries. Slavery is now illegal. Equality is a watchword. We feel obliged to people far away who we have no immediate contact with. And this moral revolution is one deeply oriented and driven by Christian history. So many contemporary so-called secular practices, categories, and judgments are in fact Christian practices, categories, and judgments with the Christian language removed but the deep Christian structure retained. pg 45