Then come the many splendid cities founded by the successors of Alexander, through its extent; and the powerful and opulent kingdoms, Greek or Barbarian, of Pontus, and Bithynia, and Pergamus--Pergamus, with its library of 200,000 choice volumes. Later still, the resources of the country were so well recognised, that it was the favourite prey of the Roman statesmen, who, after involving themselves in enormous debts in the career of ambition, needed by extortion and rapine to set themselves right with their creditors. Next it became one of the first seats of Christianity; St. Luke in the Acts of the Apostles relates to us the apostolic labours of St. Paul there in town and country; St. John wrote the Apocalypse to the Churches of seven of its principal cities; and St. Peter, his first Epistle to Christians scattered through its provinces. It was the home of some of the greatest Saints, Martyrs, and Doctors of the early ages: there first, in Bithynia, the power of Christianity manifested itself over a heathen population; there St. Polycarp was martyred, there St. Gregory Thamaturgus converted the inhabitants of Pontus; there St. Gregory Nazianzen, St. Gregory Nyssen, St. Basil, and St. Amphilochius preached and wrote. There were held three of the first four Councils of the Church, at Chalcedon, at Ephesus, and at Nicaea, the very city afterwards profaned by the palace of the Sultan. It abounded in the gifts of nature, for food, utility, or ornament; its rivers ran with gold, its mountains yielded the most costly marbles; it had mines of copper, and especially of iron; its plains were fruitful in all kinds of grain, in broad pastures and luxuriant woods, while its hills were favourable to the olive and the vine.