At last the Church historian and the civic historian have joined hands, and look each other in the face. They see that their aim is essentially common: to know the truth about the past. This search for truth for its own sake is purely modern--almost contemporaneous. Formerly, history was written to justify or disprove some theory of political or ecclesiastical polity, or to glorify some dynasty, sect, party, or hero, or to vindicate some hypothesis or set of ideas. The historian was not a searcher for truth, but a lawyer with a cause to plead. It is generally realised now that the historian, whether he deals with the state, the Church, society, education, or industry, is working an important part of the field of general history. A knowledge of each one of these institutions is necessary to supplement and explain any or all of the others.
This institutional interdependence seems to be generally recognised now. "The web of history," said Professor Hatch in beginning his great work at Oxford, "is woven of one piece; it reflects the unity of human life, of which it is the record. We cannot isolate any group of facts and consider that no links of causation connect them with their predecessors or their contemporaries. Just as Professor Freeman insists on the continuity of history, so I wish to insist on its solidarity."[4:1] The mutual labours of scholars in correlating fields have revolutionised our historical knowledge of the early and later Middle Ages. A multitude of controverted points have vanished like ghosts. We see the old Church now as we never saw it before. The Catholic Church and the mediæval papacy were the greatest of the creations of the first fifteen centuries of the Christian era. The mediæval Church was not exclusively a religious organisation. It was more of an ecclesiastical state. It had laws, lawyers, courts, and prisons. If not born into it, all the people of western Europe were at least baptised into it. It levied taxes on its subjects. Standards of patriotism and treason were more sharply defined than in the modern state.[5:1] The evolution of this great organisation is the central fact of the first thirteen centuries after Christ. It aimed to control the whole life of its subjects here and to determine their destiny hereafter. Well may our greatest American Church historian, Henry C. Lea, ask: "What would have been the condition of the world if that organisation had not succeeded in bearing the ark of Christianity through the wilderness of the first fifteen centuries?"[5:2]