And all these gifts of will, of intellect, and of soul were employed by Leo with undeviating constancy, with untired energy, in furthering his great aim, the exaltation of the dignity of the popedom, the conversion of the admitted primacy of the bishops of Rome into an absolute and world-wide spiritual monarchy.  Whatever our opinions may be as to the influence of this spiritual monarchy on the happiness of the world, or its congruity with the character of the Teacher in whose words it professed to root itself, we cannot withhold a tribute of admiration for the high temper of this Roman bishop, who in the ever-deepening degradation of his country still despaired not, but had the courage and endurance to work for a far-distant future, who, when the Roman was becoming the common drudge and footstool of all nations, still remembered the proud words “Tu regere imperio populos, Romane, memento!” and under the very shadow of Attila and Genseric prepared for the city of Romulus a new and spiritual dominion, vaster and more enduring than any which had been won for her by Julius or by Hadrian.

Such were the two men who stood face to face in the summer of 452 upon the plains of Lombardy.  The barbarian King had all the material power in his hand, and he was working but for a twelvemonth.  The pontiff had no power but in the world of intellect, and his fabric was to last fourteen centuries.  They met, as has been said, by the banks of the Mincio.  Jordanes tells us that it was “where the river is crossed by many wayfarers coming and going.”  Some writers think that these words point to the ground now occupied by the celebrated fortress of Peschiera, close to the point where the Mincio issues from the Lake of Garda.  Others place the interview at Governolo, a little village hard by the junction of the Mincio and the Po.  If the latter theory be true, and it seems to fit well with the route which would probably be taken by Attila, the meeting took place in Vergil’s country, and almost in sight of the very farm where Tityrus and Meliboeus chatted at evening under the beech-tree.

Leo’s success as an ambassador was complete.  Attila laid aside all the fierceness of his anger and promised to return across the Danube, and to live thenceforward at peace with the Romans.  But in his usual style, in the midst of reconciliation he left a loophole for a future wrath, for “he insisted still on this point above all, that Honoria, the sister of the Emperor, and the daughter of the Augusta Placidia, should be sent to him with the portion of the royal wealth which was her due; and he threatened that unless this was done he would lay upon Italy a far heavier punishment than any which it had yet borne.”

But for the present, at any rate, the tide of devastation was turned, and few events more powerfully impressed the imagination of that new and blended world which was now standing at the threshold of the dying empire than this retreat of Attila, the dreaded king of kings, before the unarmed successor of St. Peter.