The other alternative was to combine the dialectical idealism of Plato with the cosmology of early Greek thought, interpreting the two worlds of spirit and Nature as gradations of a single series and manifestations of a single principle. This was what Aristotle had attempted to do, but had not done so thoroughly as to satisfy the moral wants of his own age, or the religious wants of the age when a revived Platonism was seeking to organise itself into a system which should be the reconciliation of reason and faith. Yet the better sort of Platonists felt that this work could not be accomplished without the assistance of Aristotle, whose essential agreement with their master, as against Stoicism, they fully recognised. Their mistake was to assume that this agreement extended to every point of his teaching. Taken in this sense, their attempted harmonies were speedily demolished by scholars whose professional familiarity with the original sources showed them how strongly Aristotle himself had insisted on the differences which separated him from the Academy and its founder.[407] To identify the two great spiritualist philosophers being impossible, it remained to show how they could be combined. The solution of such a problem demanded more genius than was likely to be developed in the schools of Athens. An intenser intellectual life prevailed in Alexandria, where the materials of erudition were more abundantly supplied, and where contact with the Oriental religions gave Hellenism a fuller consciousness of its distinction from and superiority to every other form of speculative activity. And here, accordingly, the fundamental idea of Neo-Platonism was conceived. II.