Titus Livius (Livy), The History of Rome, Book 42
Evan T. Sage, Ph.D. and Alfred C. Schlesinger, Ph.D., Ed.

11. Valerius Antias writes¹ that Attalus, the brother of King Eumenes, came as an ambassador to Rome in this same consulship, to lay charges against Perseus and to give an account of his preparations for war. The works of the majority of historians,² [p. 323]and men whom you would prefer to trust, say that³ Eumenes himself came. [2] Eumenes, then, on his arrival in Rome was received with such honours as they believed not only due to his deserts but also commensurate with their own favours which had been heaped upon him in abundance, and was introduced into the senate by the praetor. [3] He said that the reason for his coming to Rome, in addition to his desire to see the gods and men by whose kindness he enjoyed a fortune beyond which he did not venture even to wish for anything, had been to give public warning to the senate that they should take measures against the designs of Perseus. [4] Then, beginning with the plans of Philip, he spoke of the death of Philip's son Demetrius, who opposed the war with Rome, and mentioned the summoning of the people of the Bastarnae from their homes, relying on whose aid⁴ Philip was to cross into Italy. While he was revolving such plans in his mind, death had overtaken him, and he had left his kingdom to the one who (he had seen) was most dangerous to the Romans. [5] And so, Eumenes said, Perseus had long been preparing a war which had been left him as a legacy by his father and handed on to him along with the throne, and had been feeding and nursing it —it was now very close —by all possible schemes. [6] Perseus, besides, was strong in the number of his young men, a generation which the long peace had brought forth, was strong in the resources of his kingdom, was strong too in his own youth. While he possessed strength and vigour of body, his mind too had been long trained in the theory and practice of war. [7] Even from boyhood, in his fathers' tent, he had been made accustomed to wars with Rome, not merely to campaigns against their [p. 325]neighbours, and had been sent by his father on many and⁵ various expeditions. [8] From the moment he had received the throne, Eumenes went on to say, he had gained, in a marvellous series of triumphs, many things which Philip had been unable to accomplish either by force or by craft, although he had left nothing untried. [9] There had been added to his strength an influence which was usually acquired through a long period of time and by numerous and important services.