"The holy Fathers proceed to do what the Bishops at Chalcedon would have done, had they undertaken the examination of Ibas' letter. They compare the letters with the acts of Ephesus and Chalcedon. The holy Council declared--'The comparison made proves, beyond a doubt, that the letter which Ibas is said to have written is, in all respects, opposed to the definition of the right faith, which the Council of Chalcedon set forth. All the Bishops cried out, 'We all say this; the letter is heretical.' Thus, therefore, is it proved by the fifth Council that our holy Fathers in Ecumenical Councils pronounce the letters read, whether of Catholics or heretics, or even of Roman Pontiffs, to be orthodox or heretical, according to the same procedure, after legitimate cognisance, the truth being inquired into, and then cleared up; and upon these premises judgment given. "What! you will say, with no distinction, and with minds equally inclined to both parties? Indeed we have said, and shall often repeat, that there was a presumption in favour of the decrees of orthodox Pontiffs; but in Ecumenical Councils, where judgment is to be passed in matter of faith, that they were bound no longer to act upon presumption, but on the truth clearly and thoroughly ascertained. "Such were the acts of the fifth Council. This it learnt from the third and fourth Councils, and approved; and in this argument we have brought at once in favour of our opinion the decrees of the Ecumenical Councils of Ephesus, Chalcedon, and the second Constantinopolitan."[121] The point here taken up by Bossuet, and proved upon indisputable authority, is of the greatest importance, viz. that the decree of a Roman Pontiff, _de fide_, and he, perhaps, the greatest of the whole number, was judged by a General Council, and only admitted when it was found conformable to antiquity. It settles, in fact, the whole question, that the Bishop of Rome is indeed possessed of the First See, and Primate of all Christendom; but that he is not the sole depository of Christ's power in the Church, which is, in truth, the Papal idea, laid down by St. Gregory the Seventh, and acted upon since. The difference between these two ideas is the difference between the Church of the Fathers and the present Latin Communion in the matter of Church government, in which they are wide as the poles asunder. The history of Pope Vigilius further confirms the truth of what we have said. Bossuet proceeds: "In the same fifth Council the following acts support our cause.