Pope St. Leo the Great, to St. Valentine, Bishop of Interamna: “Go and preach the faith; be instant in season and out of season; glorious will be the fruit of your trouble, if you but enable yourself to endure and soften the hardness of the long opposing people. But if you fail, you may with my permission and authority become the messenger of the faith to other countries.” (As cited by Fr. Leonard Goffine in his work “The Ecclesiastical Year”, Feast of St. Valentine)