Since the fifteenth century, when humanist writers began to speak of a “middle” period in history linking their time to the ancient world, the nature of the Middle Ages has been widely debated. Across the millennium from 500 to 1500, distinguished historian Johannes Fried describes a dynamic confluence of political, social, religious, economic, and scientific developments that draws a guiding thread through the era: the growth of a culture of reason. “Fried’s breadth of knowledge is formidable and his passion for the period admirable…Those with a true passion for the Middle Ages will be thrilled by this ambitious defensio.” —Dan Jones, Sunday Times “Reads like a counterblast to the hot air of the liberal-humanist interpreters of European history…[Fried] does justice both to the centrifugal fragmentation of the European region into monarchies, cities, republics, heresies, trade and craft associations, vernacular literatures, and to the persistence of unifying and homogenizing forces: