Ubi Arcano Dei Consilio §6

⁶ These different events, some sad and some joyful, the history of which We wish to record for the edification of posterity, spoke most eloquently to Us, making more and more clear to Our mind those objectives which seem to claim the foremost place in Our Apostolic Ministry and of which it behooves Us to speak now in as solemn a manner as possible in this, Our very first message to you.