IV. St. Peter's love conquered his fears in coming to Rome
To this city then, most blessed Apostle Peter, you dost not fear to come, and when the Apostle Paul, the partner of your glory, was still busied with regulating other churches, entered this forest of roaring beasts, this deep, stormy ocean with greater boldness than when you walked upon the sea. And you who had been frightened by the high priest's maid in the house of Caiaphas, had no fear of Rome the mistress of the world. Was there any less power in Claudius, any less cruelty in Nero than in the judgment of Pilate or the Jews' savage rage? So then it was the force of love that conquered the reasons for fear: and you did not think those to be feared whom you had undertaken to love. But this feeling of fearless affection you had even then surely conceived when the profession of your love for the Lord was confirmed by the mystery of the thrice-repeated question. And nothing else was demanded of this your earnest purpose than that you should bestow the food wherewith you had yourself been enriched, on feeding His sheep whom you loved.
Source: Sermons (New Advent)