Pope St. Leo the Great (400-461)
Leo was Pope when Attila the Hun invaded Rome. Many believe it was his sanctity and eloquence that saved the city. He called the Council of Chalcedon to condemn a number of major heresies of the period. An eloquent writer and homilist, he was proclaimed a Doctor of the Church.

Reflections from the Saints

Virtue is nothing without the trial of temptation, for there is no conflict without an enemy, no victory without strife.
– Pope St. Leo the Great