Perseus, heir to his father’s crown and enmities, had taken advantage of the peace to increase his army and his resources, to make allies, and to rouse up the kings and peoples of the East against Rome. Besides the warlike population of his own country, he had at his beck barbarous peoples like the Illyrians, the Thracians, and the Bastarnæ, dwelling not far from the Danube. Notwithstanding the treaty, which forbad Macedonia to make war without the consent of the Senate, Perseus had silently aggrandised himself on the side of Thrace; he had placed garrisons in the maritime cities of Oenoe and Maronia, excited the Dardanians[574] to war, brought under subjection the Dolopes, and advanced as far as Delphi.[575] He endeavored to draw the Achæans into an alliance, and skilfully obtained the good-will of the Greeks. Eumenes II., king of Pergamus, who, like his father Attalus I., feared the encroachments of Macedonia, denounced at Rome this infraction of the old treaties. The fear with which a powerful prince inspired him, and the gratitude which he owed to the Republic for the aggrandisement of his kingdom after the Asian war, obliged him to cultivate the friendship of the Roman people. In 582 he came to Rome, and, honourably received by the Senate, forgot nothing which might excite it against Perseus, whom he accused of ambitious designs hostile to the Republic. This denunciation raised violent enmities against Eumenes. On his way back to his kingdom, he was attacked by assassins, and dangerously wounded. Suspicion fell on the Macedonian monarch, not without show of reason, and was taken by the Republic as sufficient ground for declaring war on a prince whose power began to offend it. Bold in planning, Perseus displayed cowardice when it was necessary to act. After having from the first haughtily rejected the Roman claims, he waited in Thessaly for their army, which, ill-commanded and ill-organised, was beaten by his lieutenants and repulsed into mountain gorges, where it might have been easily destroyed. He then offered peace to P. Licinius Crassus; but, notwithstanding his check, the consul replied, with all the firmness of the Roman character, that peace was only possible if Perseus would abandon his person and his kingdom to the discretion of the Senate.[576] Struck by so much assurance, the king recalled his troops, and suffered the enemy to effect his retreat undisturbed. The incapacity of the Roman generals, however, their violences, and the want of discipline among the soldiers, had alienated the Greeks, who naturally preferred a prince of their own race to a foreign captain; moreover, they did not see the Macedonians get the better of the Romans without a certain satisfaction. In their eyes, it was the Hellenic civilisation overthrowing the presumption of the Western barbarians.