Pope Leo’s motto, coat of arms pay homage to St. Augustine May 12, 2025By Catholic News Service Catholic News Service Filed Under: News, Saints, Vatican, World News VATICAN CITY (CNS) — Pope Leo XIV’s devotion to St. Augustine, his life and ministry as a member of the Augustinian order and his focus on the unity of the church are reflected in his episcopal motto and coat of arms. St. Augustine of Hippo is depicted in a stained-glass window in Crosier House in Phoenix. (OSV News photo/Crosiers) When he appeared on the balcony of St. Peter’s Basilica shortly after his election May 8, he introduced himself as “an Augustinian, a son of St. Augustine.” And he explained that the cardinals who elected him “have chosen me to be the Successor of Peter and to walk together with you as a Church, united, ever pursuing peace and justice, ever seeking to act as men and women faithful to Jesus Christ, in order to proclaim the Gospel without fear, to be missionaries.” His episcopal motto is, “In Illo uno unum,” or literally “In the One, we are one.” Vatican News explained that the phrase is taken from St. Augustine’s “Exposition on Psalm 127,” where he explains that “although we Christians are many, in the one Christ we are one.” As a cardinal, he told Vatican News in 2023, “As can be seen from my episcopal motto, unity and communion are truly part of the charism of the Order of St. Augustine, and also of my way of acting and thinking.” “I believe it is very important to promote communion in the church, and we know well that communion, participation and mission are the three keywords of the Synod” of Bishops on synodality, he said. “So, as an Augustinian, for me promoting unity and communion is fundamental.” His shield, now topped by a miter instead of the red galero hat on the shield of cardinals, is divided diagonally into two. The upper half features a blue background with a white lily or fleur-de-lis, symbolizing the Virgin Mary, but also his French heritage. The lower half of the shield has a light background and displays an image common to the religious orders named after and inspired by St. Augustine: a closed book with a heart pierced by an arrow. Vatican News said, “This is a direct reference to the conversion experience of St. Augustine himself, who described his personal encounter with God’s word using the phrase: ‘Vulnerasti cor meum verbo tuo’ — ‘You have pierced my heart with your Word.'” Read More Vatican News ANALYSIS: Will President Donald Trump’s criticism of Pope Leo XIV have electoral implications? Anglicans, Catholics must work to overcome differences, pope tells archbishop of Canterbury Pope Leo XIV advances sainthood causes, including Dutch nun who served in Missouri Pope Leo’s October meeting on marriage, family gains urgency amid declining birth rates in West Radio Interview: Pope Leo XIV’s biographer shares insights on the Augustinian who became pope Pope Leo to new priests: Keep Church door open, don’t be an obstacle Copyright © 2025 Catholic News Service/U.S. Conference of Catholic Bishops Print
