From the 2004 conference "Ecumenism: Origins, Expectations, Disenchantment"
"Ecumenism began within the bosom of Protestantism at the beginning of the 20th century as an effort to regain unity for a protestant world divided into innumerable groupings and off-shoots. Ecumenism has no relation whatsoever to the ecumenicity and catholicity of the Church, which is fully preserved, both geographically and ecclesiologically, in the One, Holy, Catholic, and Apostolic Church, i.e. the Orthodox Church, which continues to believe that which has been believed “always, everywhere, and by all.” The existence of heresies negates neither the unity nor the ecumenicity nor the catholicity of the Church. The Church continues to be one and universal. Heresies and schisms such as the “catholic” and protestant “churches” of the West as well as the anti-Chalcedonian churches of the East are not the legitimate and authentic local churches of those lands; these churches recover unity and catholicity, they constitute true churches, when they are reincorporated into the faith and life of the Orthodox Catholic Church, which is not simply the true Church, but the only Church. Consequently, from its beginnings until today, the so-called “World Council of Churches”, as the vehicle of Protestant Ecumenism, is in a true ecclesiological sense a “World Council of heresies and schisms.”
Papalism departed from the unity and catholicity of the Church at the beginning of the second millennium with the schism of 1054 and the adoption of heresies such as the “filioque” and “papal primacy.” The then orthodox Church of Rome, which had shown forth many saints, martyrs and confessors, was drawn into heresy and delusion. Cut off from the one and true Church, the local Church of Rome, as a captive of scholasticism and the worldly aspirations of the popes, not only failed to keep western Christianity unified, but became the source of new heresies and schisms, such as the protestant Reformation of the 16th century in its varied forms, Anglicanism and Old Catholicism. It falsified the theanthropic character of the Church, changing it into a human institution with total control over the faithful, and led to the de-Christianization and un-churching of Europe. The speakers and attendees of the conference accepted the most suitable definition of Ecumenism left to us by the venerable Elder Fr. Justin Popovich: “Ecumenism is the common name for pseudo-christianities and all pseudo-churches of Western Europe. Within it is found the heart all of the European humanisms, with Papism at its head. And all of these pseudo-christianities, all of these pseudo-churches are nothing but one heresy after another. Their common name, according to the Gospel, is pan-heresy.”
The attempts at union between Rome and Constantinople over a period of five centuries, from the schism to the fall in 1453 of Constantinople to the Turks, along with their corresponding theological dialogues, failed because they were not accompanied by true repentance, a readiness to renounce delusion and return to the One, Holy, Catholic, and Apostolic Church. Dispensations and compromises in matters of faith for the accomplishment of unity were always refuted by the ever-vigilant and watchful conscience of the flock of the faithful. In spite of obvious worldly agendas and political manipulation, these attempts never ended in the dogmatic minimalism, syncretistic leveling and worldly talk of love, as have the ecumenical dialogues of the 20th century. The apostolic and patristic principle that “there is no room for compromise in matters of faith” prevailed.
That which could not be accomplished for centuries by Papism, has been attempted, since the beginning of the 20th century, with Protestant Ecumenism; and Papist Ecumenism in its turn, has supported these efforts since the Second Vatican Council (1963-65). Both Papism and Protestantism are continuously losing their prestige and authority in America, Europe and throughout the world. Through ecumenism, they are attempting to cover themselves, to conceal their alienation and departure from the one, true Church of Christ, to fortify the greatest ecclesiological heresy ever; namely, that the One, Holy, Catholic and Apostolic Church does not exist, that it has ceased to be, that all of the christian confessions retain aspects of the Church, such that their faithful need not fret nor bother to seek out the true Church and their salvation."