If it had not been a church, it is impossible to say what might have happened to it amid the fall of the Roman Empire. I confine myself to purely human considerations; I put aside every element foreign to the natural consequences deducible from natural facts; and I believe that if Christianity had been, as in the early times, only an individual belief, sentiment, or conviction, it would have sunk under the ruins of the Empire, and the invasions of the barbarians. {48} It succumbed at a later date in Asia and in the north of Africa, under an invasion of the same nature, an invasion of Moslem barbarians, even when it was in a state of institution, when it was an established church. Much more might the same result have occurred at the fall of the Roman Empire. There were at that time none of the means in existence by which at the present day moral influences are established or offer resistance independently of institutions, none of the means by which a mere truth or idea acquires an empire over the minds of men, governs actions, and determines events. Nothing existed in the fourth century to give to personal ideas and sentiments such a sway. It is clear that a society powerfully organised and vigorously governed was needed to struggle against so destructive a crisis, and to arise victorious from so fearful a conflict. It is not therefore too much to affirm that, at the end of the fourth, and beginning of the fifth century, it was the Christian church which saved Christianity; it was the church, with its institutions, its magistrates, its temporal power, which strove triumphantly against the internal dissolution which convulsed the Empire, and against barbarity which subdued the barbarians themselves, and became the link, the medium, the principle of civilisation, as between the Roman and barbarian worlds. Hence it is the state of the church rather than of Christianity, properly so called, in the fifth century, which ought to be investigated, in order to discover in what Christianity has from that period aided modern civilisation, and what elements it has introduced. An inquiry necessarily arises, What was the Christian church at that epoch? When we consider, under a merely human aspect, the different revolutions which have been accomplished in the development of Christianity, from its origin to the fifth century, taking it only as a society, and not as a religious creed, we find that it has passed through three stages essentially distinct. In the earliest period, the Christian society presents itself as a simple association arising from a common creed, from common sentiments; the first Christians congregated in order to enjoy amongst themselves an interchange of the religious emotions and convictions common to all their breasts. There was no settled system of doctrines, of rules, or of discipline, or no body of persons invested with authority.