St. Augustine of Hippo: The City of God

In The City of God (begun in 413, but Books 20-22 were written in 426) Augustine answers the pagans, who attributed the fall of Rome (410) to the abolition of pagan worship. Considering this problem of Divine Providence with regard to the Roman Empire, he widens the horizon still more and in a burst of genius he creates the philosophy of history, embracing as he does with a glance the destinies of the world grouped around the Christian religion, the only one which goes back to the beginning and leads humanity to its final term. The City of God is considered as the most important work of the great bishop. The other works chiefly interest theologians; but it, like the Confessions, belongs to general literature and appeals to every soul. The Confessions are theology which has been lived in the soul, and the history of God's action on individuals, while The City of God is theology framed in the history of humanity, and explaining the action of God in the world.