Vergil's fourth Eclogue, foretelling a child whose coming would usher in the golden age, has often been supposed to be based upon eastern material; and it has even been suggested that, in the period of Roman history which ended with Octavian's final success at Actium, both East and West alike were expecting the Roman world to pass under the rule of one man, whether a Roman or a king from the east, to be followed by the birth of a child with whom should come the final kingdom of peace. But the ideas of the East in this matter have been deduced from western and Jewish material; and I hope in this paper to do a little toward ascertaining the view of the Greek East from a contemporary Greek document which has never been seriously examined, and considering its relation to the ideas of Vergil. I can only do a little, for most of the material vanished when Augustus later burnt 2,000 prophecies; but the secondary historians from whom we derive our current ideas of the East in the crucial years before Actium are so extraordinarily tendencious that every scrap of contemporary material, outside the circle of the victors' version, must be of value. My aim is to treat the matter solely from the historical standpoint; and the name of the boy Alexander Helios, son of Cleopatra and Antony, in whom East and West met, will serve to unite the two aspects of what I have to say.