3 But as soon as we were able from the height of Apostolic dignity to survey at a glance the course of human affairs, our eyes were met by the sad conditions of human society, and we could not but be filled with bitter sorrow. For what could prevent the soul of the common Father of all being most deeply distressed by the spectacle presented by Europe, nay, by the whole world, perhaps the saddest and most mournful spectacle of which there is any record. Certainly those days would seem to have come upon us of which Christ Our Lord foretold: "You shall hear of wars and rumours of wars - for nation shall rise against nation, and kingdom against kingdom" ( Matt . xxiv, 6, 7). On every side the dread phantom of war holds sway: there is scarce room for another thought in the minds of men. The combatants are the greatest and wealthiest nations of the earth; what wonder, then, if, well provided with the most awful weapons modern military science has devised, they strive to destroy one another with refinements of horror. There is no limit to the measure of ruin and of slaughter; day by day the earth is drenched with newly-shed blood, and is covered with the bodies of the wounded and of the slain. Who would imagine as we see them thus filled with hatred of one another, that they are all of one common stock, all of the same nature, all members of the same human society? Who would recognize brothers, whose Father is in Heaven? Yet, while with numberless troops the furious battle is engaged, the sad cohorts of war, sorrow and distress swoop down upon every city and every home; day by day the mighty number of widows and orphans increases, and with the interruption of communications, trade is at a standstill; agriculture is abandoned; the arts are reduced to inactivity; the wealthy are in difficulties; the poor are reduced to abject misery; all are in distress.
Source: Ad Beatissimi Apostolorum (Vatican.va)