in such close proximity to the chief centres of Egyptian life. Even in our own day, the philosophy of the Upanishads, and the teaching of the Buddha, in however distorted a form, have crossed the pale which divides East from West, and the pale between Egypt and Hellas was far more pervious. Both nations professed a complex polytheism, with so great a resemblance between the two pantheons, that even before the time of Herodotus certain deities in the one had come to be regarded as identical with their counterparts in the other;[72] the traditions of the Greeks claimed an Egyptian origin for several of the national gods and heroes; a belief that the Hellenic religion was indebted for some of its more esoteric elements to the same source was expressed by Plato, and had been held by his successors, and we have seen that some of the most authoritative modern scholars accept this opinion as well founded, however much they may differ as to the amount of the debt. These circumstances would necessarily predispose the more inquiring minds among the Alexandrian Greeks and Hellenised Hebrews, in an age when speculation concerning the hidden things of life, and of the life after death, was a subject of paramount interest, to examine the theories which had been held on that subject by the nations, the orgiastic and magical side of whose religions was offering just then so powerful an attraction to the vulgar of the Hellenic world. Nor are we without direct evidence of contact between the two systems of thought. Ptolemy I. (abdicated 285 B.C.), acting partly under the inspiration of Timotheus, an authority on the Eleusinian mysteries, attempted to fuse the Greek and Egyptian cults into one eclectic system.[73] The poet Callimachus, who held the post of librarian (_c._ 260-240 B.C.) to Ptolemy Philadelphus and his son Euergetes, acquired for the Alexandrian library Egyptian as well as Greek and Hebrew books; and his successor in office, Eratosthenes, the astronomer and geometrician, was also addicted to Egyptian studies. Indeed, the Plutarchian treatise ‘On Isis and Osiris’ is one instance out of many of the interest felt by cultivated Greeks in Egyptian beliefs, which had long taken their place as parts of the popular cult in many places in Greece and Asia.[74] On the other hand, the initiation of even a few cultured Egyptians into Hellenic learning would suffice to further an interchange of ideas between the two races.