St. Leo the Great was born in Tuscany. As deacon, he was dispatched to Gaul as a mediator by Emperor Valentinian III. He reigned as Pope between 440 and 461. He persuaded Emperor Valentinian to recognize the primacy of the Bishop of Rome in an edict in 445. The doctrine of the Incarnation was formed by him in a letter to the Patriarch of Constantinople, who had already condemned Eutyches. At the Council of Chacedon this same letter was confirmed as the expression of Catholic Faith concerning the Person of Christ.
All secular historical treatises eulogize his efforts during the upheaval of the fifth century barbarian invasion. His encounter with Attila the Hun, at the very gates of Rome persuading him to turn back, remains a historical memorial to his great eloquence. When the Vandals under Genseric occupied the city of Rome, he persuaded the invaders to desist from pillaging the city and harming its inhabitants. He died in 461, leaving many letters and writings of great historical value. His feast day is November 10th.
Peter has spoken by the mouth of Leo. – Council of Chalcedon
Virtue is nothing without the trial of temptation, for there is no conflict without an enemy, no victory without strife. – Pope Saint Leo the Great
Although the universal Church of God is constituted of distinct orders of members, still, in spite of the many parts of its holy body, the Church subsists as an integral whole, just as the Apostle says: “We are all one in Christ,” nor is anyone separated from the office of another in such a way that a lower group has no connection with the head. In the unity of faith and baptism, our community is then undivided. There is a common dignity as the apostle Peter says in these words: “And you are built up as living stones into spiritual houses, a holy priesthood, offering spiritual sacrifices which are acceptable to God through Jesus Christ.” And again: “But you are a chosen people, a royal priesthood, a holy nation, a people of election.” For all, regenerated in Christ, as made kings by the sign of the cross. They are consecrated priests by the oil of the Holy Spirit, so that beyond the special service of our ministry as priests, all spiritual and mature Christians know that they are a royal race and are sharers in the office of the priesthood. For what is more king-like than to find yourself ruler over your body after having surrendered your soul to God? And what is more priestly than to promise the Lord a pure conscience and to offer him in love unblemished victims on the altar of one’s heart? – from a sermon by Pope Saint Leo the Great
God decreed that all nations should be saved in Christ. Dear friends, now that we have received instruction in this revelation of God’s grace, let us celebrate with spiritual joy the day of our first harvesting, of the first calling of the Gentiles. Let us give thanks to the merciful God, “who has made us worthy,” in the words of the Apostle, “to share the position of the saints in light; who has rescued us from the power of darkness, and brought us into the kingdom of this beloved Son.” This came to be fulfilled, as we know, from the time when the star beckoned the three wise men out of their distant country and led them to recognize and adore the King of heaven and earth. The obedience of the star calls us to imitate its humble service: to be servants, as best we can, of the grace that invites all men to find Christ. – from a sermon by Pope Saint Leo the Great