The Motto

Pope Leo XIV has also chosen a motto that reflects this Augustinian tradition: In Illo uno unum, which means “In the One, we are one.” The phrase is taken from Saint Augustine’s Exposition on Psalm 127, where he explains that “although we Christians are many, in the one Christ we are one.”

The Coat of Arms

The shield is divided diagonally into two sections. The upper half features a blue background with a white lily.

The lower half of the shield has a light background and displays an image that recalls the Order of Saint Augustine: a closed book with a heart pierced by an arrow. This is a direct reference to the conversion experience of Saint 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.”