Pacem, Dei Munus Pulcherrimum §15

¹⁵ Truly, as We have already said, this Apostolic See has never wearied of teaching during the war such pardon of offences and the fraternal reconciliation of the peoples, in conformity with the most holy law of Jesus Christ, and in agreement with the needs of civil life and human intercourse; nor did it allow that amid dissension and hate these moral principles should be forgotten. With all the more reason then, now that the Treaties of Peace are signed, does it proclaim these principles as, for example, it did a short time ago in the Letter to the Bishops of Germany , and in that addressed to the Archbishop of Paris .