Titus Livius (Livy), The History of Rome, Book 40
Evan T. Sage, Ph.D. and Alfred C. Schlesinger, Ph.D., Ed.

20. Then they introduced the embassies into the senate, first those of the kings, Eumenes, and Ariarathes of Cappadocia, and Pharnaces of Pontus. No further reply was given to them than that the senate would send men to investigate their differences and give [p. 65]judgment. [2] Then the representatives of the¹ Lacedaemonian exiles and of the Achaeans were brought in, and hope was held out to the exiles that the senate would write to the Achaeans directing that they be restored.² The Achaeans explained to the satisfaction of the Fathers regarding the recovery of Messene and the solution of the problems there. [3] Philip, king of the Macedonians, also sent two envoys, Philocles and Apelles, with no particular request to make of the senate, but rather to collect information and make inquiry about those conversations which Perseus had accused Demetrius of holding with the Romans and specifically with Titus Quinctius about the kingship which were prejudicial to the interests of his brother. [4] These envoys the king had sent as neutral and not predisposed to favour either disputant: but as matters turned out they also were servants and helpers of Perseus in his treachery toward his brother.

[5] Demetrius, at first ignorant of everything, except what had been revealed by his brother's wickedness, had no great hope but was not altogether without hope that his father could be appeased;³ he trusted less every day to his father's intentions, since he perceived that his father's attention was engrossed by his brother. [6] And so, reflecting carefully on everything he said or did, lest he increase the suspicions of anyone, he refrained particularly from all reference to or contact with the Romans, to such a degree that he did not even want them to write to him, because he knew that his father's mind was especially irritated by charges of this kind.