It is to engage in a similar investigation that I now most earnestly but affectionately invite the members of the Church of Rome, in order to ascertain for themselves the ground of their faith and practice in a matter of vast moment, and which, with other points, involves the principle of separation between the Roman and Anglican branches of the universal Church. Were the subjects of minor importance, or what the ancient writers were wont to call "things indifferent," reason and charity would prescribe that we should bear with each other, allowing a free and large discretion in any body of Christians, and not severing ourselves from them because we deemed our views preferable to theirs. In such a case we might well walk in the house of God as friends, without any interruption of the harmony which should exist between those who worship the true God with one heart and one mind, ever striving to keep the unity of the Spirit in the bond of peace. But when the points at issue are of so vast moment; when two persons agreeing in the general principles of belief in the Gospel and its chief characteristic doctrines, yet find it impossible to join conscientiously in the same prayer, or the same acts of faith and worship, then the necessity is imperative on all who would not be parties to the utter breaking up of Christian unity, nor assist in propagating error, to make sure of their {11} foundations; and satisfy themselves by an honest inquiry and upright judgment, that the fault does not rest with them.