I end with an extract from the Pastoral of the Swiss Bishops, a Pastoral which has received the Pope’s approbation.
“It in no way depends upon the caprice of the Pope, or upon his good pleasure, to make such and such a doctrine, the object of a dogmatic definition. He is tied up and limited to the divine revelation, and to the truths which that revelation contains. He is tied up and limited by the Creeds, already in existence, and by the preceding definitions of the Church. He is tied up and limited by the divine law, and by the constitution of the Church. Lastly, he is tied up and limited by that doctrine, divinely revealed, which affirms that alongside religious society there is civil society, that alongside the Ecclesiastical Hierarchy there is the power of temporal Magistrates, invested in their own domain with a full sovereignty, and to whom we owe in conscience obedience and respect in all things morally permitted, and belonging to the domain of civil society.”
Saint John Henry Newman on Papal Infallibility.