0 ENCYCLICAL OF POPE PIUS XI ON CHRISTIAN EDUCATION TO THE PATRIARCHS, PRIMATES, ARCHBISHOPS, BISHOPS, AND OTHER ORDINARIES IN PEACE AND COMMUNION WITH THE APOSTOLIC SEE AND TO ALL THE FAITHFUL OF THE CATHOLIC WORLD. Venerable Brethren and Beloved Children, Health and Apostolic Benediction. Representative on earth of that divine Master who while embracing in the immensity of His love all mankind, even unworthy sinners, showed nevertheless a special tenderness and affection for children, and expressed Himself in those singularly touching words: "Suffer the little children to come unto Me," We also on every occasion have endeavored to show the predilection wholly paternal which We bear towards them, particularly by our assiduous care and timely instructions with reference to the Christian education of youth.
Source: Divini Illius Magistri (Vatican.va)