24 We wish to point out this state of things to our children in Italy and inother nations. To all of them, however, we would say that if Our sorrow isgreat, not less great is Our courage, nor less firm Our confidence in thatProvidence which governs the world, which so constantly and lovingly watchesover the Church and which identifies itself with the Papacy according to thebeautiful works of St. Ambrose "Ubi Petrus, ibi Ecclesia." Both aredivine institutions which have outlived every outrage and attack and which haveseen the centuries go by unshaken, drawing from their misfortunes fresh force,energy and constancy.
Source: Spesse Volte (Vatican.va)