§ 24.2. In =Neo-platonism=, by the combination of all that was noblest and best in the exoteric and esoteric religion, in the philosophy, theosophy and theurgy of earlier and later times in East and West, we are presented with a universal religion in which faith and knowledge, philosophy and theology, theory and practice, were so perfectly united and reconciled, and all religious needs so fully met, that in comparison with its wealth and fulness, the gnosis as well as the faith, the worship and the mysteries of the Christians must have seemed one-sided, commonplace and incomplete. The first to introduce and commend this tendency, which was carried out in three successive schools of philosophy, the Alexandrian-Roman, the Syrian and the Athenian, was the Alexandrian =Ammonius Saccas=,--this surname being derived from his occupation as a porter. He lived and taught in Alexandria till about A.D. 250. He sought to combine in a higher unity the Platonic and the Aristotelian philosophies, giving to the former a normative authority, and he did not hesitate to enrich his system by the incorporation of Christian ideas. His knowledge of Christianity came from Clement of Alexandria and from Origen, whose teacher in philosophy he had been. Porphyry indeed affirms that he had previously been himself a Christian, but had at a later period of life returned to paganism.--The most distinguished of his scholars, and also the most talented and profound of all the Neo-platonists, was =Plotinus=, who was in A.D. 254 a teacher of philosophy at Rome, and died in A.D. 270. His philosophico-theological system in its characteristic features is a combination of the Platonic antithesis of the finite world of sense and the eternal world of ideas with the stoical doctrine of the world soul. The eternal ground of all being is the one supramundane, unintelligible and indescribable good (τὸ ἕν, τὸ ἀγαθόν), from which all stages of being are radiated forth; first; spirit or the world of ideas (νοῦς, κόσμος νοητός), the eternal type of all being; and then, from this the world soul (ψυχή); and from this, finally, the world of phenomena. The outermost fringe of this evolution, the forms of which the further they are removed from the original ground become more and more imperfect, is matter, just as the shadow is the outermost fringe of the light. It is conceived of as the finite, the fleeting, even as evil in itself. But imperfect as the world of sense is, it is nevertheless the vehicle of the ideal world and in many ways penetrated by the ideas, and the lighting up imparted by the ideas affords it its beauty. In consequence of those rays shining in from the realm of ideas, a whole vast hierarchy of divine forms has arisen, with countless dæmons good and bad, which give room for the incorporation of all the divine beings of the Greek and oriental mythologies.