It was not in the cause of the Iconoclast that Pepin has exposed his person and army in a double expedition beyond the Alps: he possessed, and might lawfully alienate, his conquests: and to the importunities of the Greeks he piously replied that no human consideration should tempt him to resume the gift which he had conferred on the Roman Pontiff for the remission of his sins, and the salvation of his soul. The splendid donation was granted in supreme and absolute dominion, and the world beheld for the first time a Christian bishop invested with the prerogatives of a temporal prince; the choice of magistrates, the exercise of justice, the imposition of taxes, and the wealth of the palace of Ravenna. In the dissolution of the Lombard kingdom, the inhabitants of the duchy of Spoleto sought a refuge from the storm, shaved their heads after the Roman fashion, declared themselves the servants and subjects of St. Peter, and completed, by this voluntary surrender, the present circle of the ecclesiastical state. That mysterious circle was enlarged to an indefinite extent, by the verbal or written donation of Charlemagne, who, in the first transports of his victory, despoiled himself and the Greek emperor of the cities and islands which had formerly been annexed to the Exarchate. But, in the cooler moments of absence and reflection, he viewed, with an eye of jealousy and envy, the recent greatness of his ecclesiastical ally. The execution of his own and his father's promises was respectfully eluded: the king of the Franks and Lombards asserted the inalienable rights of the empire; and, in his life and death, Ravenna, as well as Rome, was numbered in the list of his metropolitan cities. The sovereignty of the Exarchate melted away in the hands of the popes; they found in the archbishops of Ravenna a dangerous and domestic rival: the nobles and people disdained the yoke of a priest; and in the disorders of the times, they could only retain the memory of an ancient claim, which, in a more prosperous age, they have revived and realized.