The fundamentals of agreed ecclesiology

…we cannot conceive how agreement can be made possible between two conceptions which agree that the existence of the ministry of the Church is by the will of Christ, but differ as to whether that ministry was instituted by Christ Himself in its three degrees of bishop, priest, and deacon. In the same way we judge there to be no practical value in an agreed formula as to the necessity of the sacraments in the Church, when there is a fundamental difference between the Churches not only in regard to their number but also as to their particular efforts. ... Nor can we here apply that principle of economy which in the past the Orthodox Church has applied under quite other circumstances in the case of those who came to her with a view to union with her.
Declaration On Behalf Of The Eastern Orthodox Church - Lausanne, 1927