We have grown accustomed, however, to think of the Middle Ages as hopelessly backward in the opportunities they afforded men for the expression of their intellectual and artistic faculties, and above all for any development of that human liberty which means so much for the happiness of the race and must constitute the basis of any real advance worth while talking about in human affairs. It is this that would make the Thirteenth Century seem out of place in any comparative study for the purpose of determining proportionate epochal greatness. The spirit breathes where it will, however, and there was a mighty wind of the spirit of human progress abroad in that Thirteenth Century, whose effects usually miss proper recognition in history, because people fail to group together in their minds all the influences in our modern life that come to us from that precious period. All this present volume pretends to do is to gather these scattered details of influence in order to make the age in which they all coincided so wonderfully, be properly appreciated. If we accept the usual historical division which places the Middle Ages during the thousand years between the fall of the Roman Empire, in the Fifth Century and the fall of the Grecian Empire of Constantinople, about the middle of the Fifteenth, the Thirteenth Century must be considered the culmination of that middle age. It is three centuries before the Renaissance, and to most minds that magical word represents the beginning of all that is modern, and therefore all that is best, in the world. Most people forget entirely how much of progress had been made before the so-called Renaissance, and how many great writers and artists had been fostering the taste and developing the intelligence of the people of Italy long before the fall of Constantinople. The Renaissance, after all, means only the re-birth of Greek ideas and ideals, of Greek letters and arts, into the modern world. If this new birth of Greek esthetics had not found the soil thoroughly prepared by the fruitful labor of three centuries before, history would not have seen any such outburst of artistic and literary accomplishments as actually came at the end of the Fifteenth and during the Sixteenth centuries. {6}