It follows to inquire in what this presumption consists? It has, as I have said, two parts, the antecedent probability of a Popedom, and the actual state of the Post-nicene Church. The former of these reasons has unavoidably been touched upon in what has preceded. It is the absolute need of a monarchical power in the Church which is our ground for anticipating it. A political body cannot exist without government, and the larger is the body the more concentrated must the government be. If the whole of Christendom is to form one Kingdom, one head is essential; at least this is the experience of eighteen hundred years. As the Church grew into form, so did the power of the Pope develope; and wherever the Pope has been renounced, decay and division have been the consequence. We know of no other way of preserving the _Sacramentum Unitatis_, but a centre of unity. The Nestorians have had their "Catholicus;" the Lutherans of Prussia have their general superintendent; even the Independents, I believe, have had an overseer in their Missions. The Anglican Church affords an observable illustration of this doctrine. As her prospects have opened and her communion extended, the See of Canterbury has become the natural centre of her operations. It has at the present time jurisdiction in the Mediterranean, at Jerusalem, in Hindostan, in North America, at the Antipodes. It has been the organ of communication, when a Prime Minister would force the Church to a redistribution of her property, or a Protestant Sovereign abroad would bring her into friendly relations with his own communion. Eyes have been lifted up thither in times of perplexity; thither have addresses been directed and deputations sent. Thence issue the legal decisions, or the declarations in Parliament, or the letters, or the private interpositions, which shape the fortunes of the Church, and are the moving influence within her separate dioceses. It must be so; no Church can do without its Pope. We see before our eyes the centralizing process by which the See of St. Peter became the Sovereign Head of Christendom. If such be the nature of the case, it is impossible, if we may so speak reverently, that an Infinite Wisdom, which sees the end from the beginning, in decreeing the rise of an universal Empire, should not have decreed the development of a sovereign ruler. Moreover, all this must be viewed in the light of the general probability, so much insisted on above, that doctrine cannot but develope as time proceeds and need arises, and that its developments are parts of the Divine system, and that therefore it is lawful, or rather necessary, to interpret the words and deeds of the earlier Church by the determinate teaching of the later. 9.