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.

25. He ordered the tribunes of the soldiers to [p. 479]summon the army from Elatia.¹ [2] About this time, -² too, ambassadors from Antiochus arrived to discuss an alliance, but received the reply that he had nothing to say in the absence of the ten commissioners; it would be necessary for them to go to Rome and apply to the senate. [3] He then proceeded to lead the assembled forces from Elatia towards Argos, and in the vicinity of Cleonae Aristaenus the praetor met him with ten thousand Achaean infantry and one thousand cavalry, and uniting their forces they encamped a short distance away. [4] The next, day they marched down into the plain of the Argives and selected for their camp a position about four miles from Argos. [5] The commander of the Spartan garrison was Pythagoras, at once the son-in-law and brother-in-law of the tyrant,³ and at the approach of the Roman she posted strong guards on both citadels (for Argos has two citadels) and likewise on other places that were favourably situated or open to attack; [6] but while he was taking this action he could not conceal the fear which the coming of the Romans caused, and on top of the danger from outside there was also a mutiny within. [7] There was an Argive named Damocles, a young man of greater spirit than discretion, who, after exchanging oaths, began conferring with suitable persons regarding expelling the garrison, and, in his desire to add strength to his conspiracy, proved to be too careless in his estimation of fidelity. [8] When an agent sent by the prefect summoned him as he was talking to one of his party, he perceived that the plot had been betrayed and urged the conspirators who were with him to join him in armed resistance rather than perish under torture. [9] And so with a few of his friends he rushed [p. 481]into the forum, crying out that all who wished the⁴ safety of the state should follow him as the sponsor and leader of freedom. He roused almost no one, since they saw no immediate prospect of success anywhere, and not even any considerable material strength. [10] As he was uttering such appeals, the Lacedaemonians surrounded him and his party and put them to death. [11] Then some of the others were arrested, and most of these were executed, a few imprisoned. [12] During the following night many let themselves down over the wall by means of ropes and took refuge with the Romans.