On Fostering True Religious Unity Quotes

“There is but one way in which the unity of Christians may be fostered, and that is by furthering the return to the one true Church of Christ of those who are separated from it; for far from that one true Church they have in the past fallen away. The one Church of Christ is visible to all, and will remain, according to the will of its Author, exactly the same as He instituted it.”
― Pope Pius XI, On Fostering True Religious Unity: Mortalium Animos

“The Church thus wonderfully instituted could not cease to exist with the death of its Founder and of the Apostles, the pioneers of its propagation, for its mission was to lead all men to salvation without distinction of time or place. "Going therefore, teach ye all nations" (Matt. 28:19). Nor could the Church ever lack the effective strength necessary for the continued accomplishment of its task, since Christ Himself is perpetually present with it, according to His promise: "Behold, I am with you all days, even to the consummation of the world" (Matt. 28:20). Hence not only must the Church still exist today and continue always to exist, but it must even be exactly the same as it was in the days of the Apostles. Otherwise we must say - which God forbid - that Christ has failed in His purpose, or that He erred when He asserted of His Church that the gates of hell should never prevail against it (Matt. 16:18)l;”
― Pope Pius XI, On Fostering True Religious Unity: Mortalium Animos