**Pope Leo XIII: **First of all, then, We cast an affectionate look upon the East, from whence in the beginning came forth the salvation of the world. Yes, and the yearning desire of Our heart bids us conceive and hope that the day is not far distant when the Eastern Churches, so illustrious in their ancient faith and glorious past, will return to the fold they have abandoned. We hope it all the more, that the distance **separating them from Us **is not so great…
The Principal subject of contention is the Primacy of the Roman Pontiff. But let them look back to the early years of their existence, let them consider the sentiments entertained by their forefathers, and examine what the oldest Traditions testify, and it will, indeed, become evident to them that Christ’s Divine Utterance, Thou art Peter, and upon this rock I will build My Church, has undoubtedly been realized in the Roman Pontiffs. Many of these latter in the first gates of the Church were chosen from the East, and foremost among them Anacletus, Evaristus, Anicetus, Eleutherius, Zosimus, and Agatho; and of these a great number, after Governing the Church in Wisdom and Sanctity, Consecrated their Ministry with the shedding of their blood. The time, the reasons, the promoters of the unfortunate division, are well known. Before the day when man separated what God had joined together, the name of the Apostolic See was held in Reverence by all the nations of the Christian world: and the East, like the West, agreed without hesitation in its obedience to the Pontiff of Rome, as the Legitimate Successor of St. Peter, and, therefore, the Vicar of Christ here on earth. …
Therefore, Our mouth is open to you, to you all of Greek or other Oriental Rites who are** separated **from the Catholic Church…
Weigh carefully in your minds and before God the nature of Our request. It is not for any human motive, but impelled by Divine Charity and a desire for the salvation of all, that We advise the reconciliation and union with the Church of Rome; and We mean a perfect and complete union, such as could not subsist in any way if nothing else was brought about but a certain kind of agreement in the Tenets of Belief and an intercourse of Fraternal love. The True Union between Christians is that which Jesus Christ, the Author of the Church, instituted and desired, and which consists in a Unity of Faith and Unity of Government.
Nor is there any reason for you to fear… ** if you re-establish Union with Us**, you will see how, by God’s bounty, the glory and dignity of your Churches will be remarkably increased. May God, then, in His goodness, hear the Prayer…** “Make the schisms of the Churches cease,”** and “Assemble those who are dispersed, bring back those who err, and unite them to Thy Holy Catholic and Apostolic Church.” May you thus return to that one Holy Faith… consider now what priceless benefits a return of Unity would bring to you.