In Asia Minor, after the Seleucids were driven back, the kingdom of Pergamus had become the first power. Not led astray by the traditions of the Alexandrine monarchies, but sagacious and dispassionate enough to renounce what was impossible, the Attalids kept quiet; and endeavoured not to extend their bounds nor to withdraw from the Roman hegemony, but to promote the prosperity of their empire, so far as the Romans allowed, and to foster the arts of peace. Nevertheless they did not escape the jealousy and suspicion of Rome. In possession of the European shore of the Propontis, of the west coast of Asia Minor, and of its interior as far as the Cappadocian and Cilician frontiers, and in close connection with the Syrian kings--one of whom, Antiochus Epiphanes (d. 590), had ascendedthe throne by the aid of the Attalids--king Eumenes II had by his power, which seemed still more considerable from the more and more deep decline of Macedonia and Syria, instilled apprehension in the minds even of its founders. We have already related(28) how the senate sought to humble and weaken this ally after the third Macedonian war by unbecoming diplomatic arts. The relations-- perplexing from the very nature of the case--of the rulers of Pergamus towards the free or half-free commercial cities within their kingdom, and towards their barbarous neighbours on its borders, became complicated still more painfully by this ill humour on the part of their patrons. As it was not clear whether, according to the treaty of peace in 565, the heights of the Taurus in Pamphylia and Pisidia belonged to the kingdom of Syria or to that of Pergamus,(29) the brave Selgians, nominally recognizing, as it would seem, the Syrian supremacy, made a prolonged and energetic resistance to the kings Eumenes II and Attalus II in the hardly accessible mountains of Pisidia. The Asiatic Celts also, who for a time with the permission of the Romans had yielded allegiance to Pergamus, revolted from Eumenes and, in concert with Prusias king of Bithynia the hereditary enemy of the Attalids, suddenly began war against him about 587. The king had had no time to hire mercenary troops; all his skill and valour could not prevent the Celts from defeating the Asiatic militia and overrunning his territory; the peculiar mediation, to which the Romans condescended at the request of Eumenes, has already been mentioned.(30) But, as soon as he had found time with the help of his well-filled exchequer to raise an army capable of taking the field, he speedily drove the wild hordes back over the frontier, and, although Galatia remained lost to him, and his obstinately-continued attempts to maintain his footing there were frustrated by Roman influence,(31) he yet, in spite of all the open attacks and secret machinations which his neighbours and the Romans directed against him, at his death (about 595) left his kingdom in standing un-diminished. His brother Attalus II Philadelphia (d.