The main difficulty proceeds from the fact that few persons are willing to believe that in the Middle Ages, as well as throughout modern history, we can always trace the continuous reciprocal action of the Latin and German races, and that it is impossible to award the merit of any of the chief political, social, or literary revolutions exclusively to either. On the contrary, wherever the absolute predominance of one of the two races seems most undoubted, we have to tread with most caution, and seek to discover what share of the work was due to the other. Likewise, in order to justly weigh and determine their reciprocal rights in history, impartial narrative would have a better chance of success than any system based on political ideas. Assuredly, when facts are once thoroughly verified, no system is needed, since general ideas result naturally from facts. Were it allowable to introduce here a comparison with far younger times, we might remark that when French literature invaded Germany in the eighteenth century it obtained general imitation there, and unexpectedly led to the revival of national German literature. In order to glorify the national tone of this literature, would it be necessary to maintain that the great previous diffusion of French writings was only imagined by historians? Later, the French flag was flaunted in nearly every city of Germany, and the people humiliated and crushed. From that moment we see the national German spirit springing to vigorous life. Must we say that this revival was due to the French? Is it not better to describe events as they occurred, rejecting all foregone conclusions? I am quite aware of the abyss between these recent events and those of old days; but, nevertheless, I consider that Balbo was right in remarking that the fact of the origin of the communes being disputed at such length and with so much heat and learning by the two rival schools, proved that the truth was not confined exclusively to either. Accordingly, we will rapidly sum up the conclusions we deem the most reasonable.