Alexandria had been for centuries the home of the mystics. The geographical position, as well as the political circumstances of its foundation, destined that city to be the meeting-place of West and East. There the wisdom of the Orient met and fought and fused with that of the Occident. There Philo taught, and bequeathed to the Neo-Platonists much of his Pythagorean system. There flourished for a while and died fantastic eclectic creeds, pagan theosophies masquerading as Christianity. Gnosticism was a typical product of the city. Valentinus and Basilides and the other gnostics made in that cosmopolitan atmosphere their attempts to reconcile Christianity with Greek and oriental thought. There Ammonius Saccas, after his lapse from the Christian faith, taught and laid the foundation of Neo-Platonism. Plotinus was the greatest of his disciples, and, though he taught at Rome for most of his life, it was in the spirit of Alexandria that he wrought his absolute philosophy, the full-orbed splendour of the setting sun of Greek thought. Neo-Platonism did not die with Plotinus. In the middle of the fifth century, when monophysitism was at its zenith, Proclus was fashioning an intellectual machinery to express the Plotinian system. The story of Hypatia evidences the dominant position of Neo-Platonism in Alexandrian culture. The violence of Cyril's measures against her shows what a menace to the Church that philosophy was. Cyril was not a monophysite, but much that he said and did promoted their cause. Dioscurus, his nephew and successor in the see of Alexandria, championed monophysitism at the council of Chalcedon. In later generations Alexandria always offered an asylum to exiled monophysite leaders. These facts render it impossible to regard the connection between Alexandria and monophysitism as fortuitous. They further suggest that Neo-Platonism was the connecting link. Such in fact it was. Monophysitism, we might almost say, was Neo-Platonism in Christian dress. The ethos of the two systems is the same, and the doctrinal resemblance is marked. It was natural that the home of pagan mysticism should cradle the kindred system of heretical Christian mysticism. NEO-PLATONIST ONTOLOGY