1 That admirable prodigy of fraternal concord which the numberless multitudes of the faithful, from almost every nation, flocking to Rome as devout pilgrims during the course of the Holy Year have provided seems to us to contain as it were a warning voice, a solemn testimony to everybody that the peoples of the world do not wish for war nor discord nor hatred, but ardently desire peace, unity of minds and that Christian love which alone can be the source of a better and more happy era for all. It is our ardent wish that all should at last hear that warning, as with anxious mind We behold peoples engaged in a fearful preparation for war while in certain places a horrible fury of slaughter is already reaping its harvest of courageous, youthful lives.
Source: Mirabile Illud (Vatican.va)