Although I am anxious in the present work to avoid, as far as possible, all questions that are purely theological, and to consider Christianity merely in its aspect as a moral agent, it will be necessary to bestow a few preliminary pages upon its triumph in the Roman Empire, in order to ascertain how far that triumph was due to moral causes, and what were its relations to the prevailing philosophy. There are some writers who have been so struck with the conformity between some of the doctrines of the later Stoics and those of Christianity that they have imagined that Christianity had early obtained a decisive influence over philosophy, and that the leading teachers of Rome had been in some measure its disciples. There are others who reduce the conversion of the Roman Empire to a mere question of evidences, to the overwhelming proofs the Christian teachers produced of the authenticity of the Gospel narratives. There are others, again, who deem the triumph of Christianity simply miraculous. Everything, they tell us, was against it. The course of the Church was like that of a ship sailing rapidly and steadily to the goal, in direct defiance of both wind and tide, and the conversion of the Empire was as literally supernatural as the raising of the dead, or the sudden quelling of the storm. On the first of these theories it will not, I think, be necessary, after the last chapter, to expatiate at length. It is admitted that the greatest moralists of the Roman Empire either never mentioned Christianity, or mentioned it with contempt; that they habitually disregarded the many religions which had arisen among the ignorant; and that we have no direct evidence of the slightest value of their ever having come in contact with or favoured the Christians. The supposition that they were influenced by Christianity rests mainly upon their enforcement of the Christian duty of self-examination, upon their strong assertion of the universal brotherhood of mankind, and upon the delicate and expansive humanity they at last evinced. But although on all these points the later Stoics approximated much to Christianity, we have already seen that it is easy to discover in each case the cause of the tendency. The duty of self-examination was simply a Pythagorean precept, enforced in that school long before the rise of Christianity, introduced into Stoicism when Pythagoreanism became popular in Rome, and confessedly borrowed from this source. The doctrine of the universal brotherhood of mankind was the manifest expression of those political and social changes which reduced the whole civilised globe to one great empire, threw open to the most distant tribes the right of Roman citizenship, and subverted all those class divisions around which moral theories had been formed. Cicero asserted it as emphatically as Seneca. The theory of pantheism, representing the entire creation as one great body, pervaded by one Divine soul, harmonised with it; and it is a