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THE DEFINITION OF INFALLIBILITY.

thus far completed our brief Story of the Vatican Council, we have only to examine the Definition of the Infallibility of the Roman Pontiff.

I. We will therefore first take the text of the fourth chapter of the first Constitution on the Church of Christ, in which is contained the infallibility of the head of the Church; and next we will examine its meaning.

Moreover, that the supreme power of teaching is also included in the Apostolic Primacy, which the Roman Pontiff, as the successor of Peter, Prince of the Apostles, possesses over the whole Church, this Holy See has always held, the perpetual practice of the Church confirms, and Œcumenical Councils also have declared, especially those in which the East with the West met in the union of faith and charity. For the Fathers of the Fourth Council of Constantinople, following in the footsteps of their predecessors, gave forth this solemn profession: The first condition of salvation is to keep the rule of the true faith. And because the sentence of our Lord Jesus