23 Venerable Brethren, as We write these lines the terrible news comes to Us that the dread tempest of war is already raging despite all Our efforts to avert it. When We think of the wave of suffering that has come on countless people who but yesterday enjoyed in the environment of their homes some little degree of well-being, We are tempted to lay down Our pen. Our paternal heart is torn by anguish as We look ahead to all that will yet come forth from the baneful seed of violence and of hatred for which the sword today ploughs the blood-drenched furrow.
Source: Summi Pontificatus (Vatican.va)