St. Vincent of Lerins

Saint Vincent of Lérins led a worldly life, perhaps in the military, before retiring to the monastery of Lerins off the coast of Cannes, France, which is now known as Saint-Honorat, after the monastery’s founder. Three years after the Council of Ephesus (431), he wrote a book against heresies called the Commonitorium which became a famous source of teaching on the principles by which heresy could be distinguished from orthodoxy. In it he enunciated an axiom that became classic: the true and Catholic doctrine is that which has been held always, everywhere, and by everyone — quod ubique, quod semper, quod ab omnibus creditum est.” He died about ten years after writing this work, around the yea AD 445. His feast day is May 24. Biography by Dr. Italy