The Church In The Dark Ages by H. Daniel-Rops

Henri Daniel-Rops has written a history embracing not merely the development of the ecclesiastical administration, the rise and fall of churches, empires and dynasties, but giving a warmly sympathetic insight into the impact of faith upon the humble mass of its adherents, new and old, its influence upon learning, the arts and the material appurtenances it had preserved for the world, and its profound effect even upon its enemies.