Gregory devoted all his talents to the advancement of the Papacy. A contemporary document, [36] which may have been of Gregory's own composition and at any rate expresses his ideas, contains the following statements: "The Roman pontiff alone is properly called universal. He alone may depose bishops and restore them to office. He is the only person whose feet are kissed by all princes. He may depose emperors. He may be judged by no one. He may absolve from their allegiance the subjects of the wicked. The Roman Church never has erred, and never can err, as the Scriptures testify." Gregory did not originate these doctrines, but he was the first pope who ventured to make a practical application of them.
DECREE AGAINST LAY INVESTITURE, 1075 A.D.
Two years after Gregory became pope he issued a decree against lay investiture. It declared that no emperor, king, duke, marquis, count, or any other lay person should presume to grant investiture, under pain of excommunication. This decree was a general one, applying to all states of western Europe, but circumstances were such that it mainly affected Germany.
HENRY IV AND GREGORY VII
Henry IV, the ruler of Germany at this time, did not refuse the papal challenge. He wrote a famous letter to Gregory, calling him "no pope but false monk," telling him Christ had never called him to the priesthood, and bidding him "come down;" "come down" from St. Peter's throne. Gregory, in reply, deposed Henry as emperor, excommunicated him, and freed his subjects from their allegiance.
CANOSSA, 1077 A.D.
This severe sentence made a profound impression in Germany. Henry's adherents fell away, and it seemed probable that the German nobles would elect another ruler in his stead. Henry then decided on abject submission. He hastened across the Alps and found the pope at the castle of Canossa, on the northern slopes of the Apennines. It was January, and the snow lay deep on the ground. For three days the emperor stood shivering outside the castle gate, barefoot and clad in a coarse woolen shirt, the garb of a penitent. At last, upon the entreaties of the Countess Matilda of Tuscany, Gregory admitted Henry and granted absolution. It was a strange and moving spectacle, one which well expressed the tremendous power which the Church in the Middle Ages exercised over the minds of men.
[Illustration: HENRY IV, COUNTESS MATILDA, AND GREGORY VII
From a manuscript of the twelfth century now in the Vatican Library at
Rome.]
CONCORDAT OF WORMS, 1122 A.D.
The dramatic scene at Canossa did not end the investiture conflict. It dragged on for half a century, being continued after Gregory's death by the popes who succeeded him. At last in 1122 A.D. the opposing parties agreed to what is known as the Concordat of Worms, from the old German city where it was signed.