110 The "Catholic Church, the City of God, whose King is Truth, whose law love and whose measure eternity" ( Saint Augustine , Ep. CXXXVIII. Ad Marcellinum, C. 3, N. 17), preaching fearlessly the whole truth of Christ and toiling as the love of Christ demands with the zeal of a mother, stands as a blessed vision of peace above the storm of error and passion awaiting the moment when the all-powerful Hand of Christ the King shall quiet the tempest and banish the spirits of discord which have provoked it.
Source: Summi Pontificatus (Vatican.va)