Titus Livius (Livy), The History of Rome, Book 34
Evan T. Sage, Ph.D. Professor of Latin and Head of the Department of Classics in the University of Pittsburgh, Ed.

30. Although Nabis had been greatly alarmed at the approach of the Roman fleet and the surrender of the coast towns, yet he had rested on a slender hope as long as Gytheum was held by his troops; [2] when he learned that it too had been given over to the Romans and that, while on land there was no hope, all the country being in [3] the hands of the enemy, he was entirely cut off from the sea as well, considering that he must yield to fortune, he first sent a herald to the camp to find out whether they would permit ambassadors to be sent to them. [4] [p. 495]When this was granted Pythagoras came to the¹ commander with no other message than that the tyrant be granted an interview with the general. [5] When a council was summoned and all agreed that an interview should be granted, a time and place were appointed. [6] They arrived with moderate escorts at some hills in the intervening country, and both parties, leaving their cohorts on guard in plain sight, came down to the meeting-place, Nabis with a [7] picked body-guard, Quinctius with his brother, King Eumenes, Sosilas the Rhodian, Aristaenus, praetor of the Achaeans, and a few military tribunes.