59 Our purpose, Venerable Brethren, in focusing attention on these facts has been to establish beyond doubt that in ancient times East and West alike were united in the generosity of their tribute to the holiness of St. Leo the Great. Would that it were so today; that those who are separated from the Church of Rome yet still have the welfare of the Church at heart, might bear witness once more to that ancient, universal esteem for St. Leo.
Source: Aeterna Dei Sapientia (Vatican.va)