Titus Livius (Livy), The History of Rome, Book 43
William A. McDevitte, Sen. Class. Mod. Ex. Schol. A.B.T.C.D., Ed.

1. In the same summer in which the Romans were conquerors in the cavalry action in Thessaly, the lieutenant- [p. 2029]general, sent by the consul to Illyricum, compelled, by [2??] force of arms, two opulent cities to surrender, and gave the inhabitants all their effects, in hopes, by the reputation of his clemency, to allure to submission the inhabitants of Carnus, a city strongly fortified. [3] But after he could neither induce them to surrender, nor take their city by a siege; that his soldiers might not be fatigued by the two sieges without reaping any advantage, he sacked those cities which he had spared before. [4] The other consul, Caius Cassius, performed nothing memorable in Gaul, the province that fell to his lot; but made an ill-judged attempt to lead his army through Illyricum to Macedon. [5] The senate learned his having undertaken that march from deputies from Aquileia, who complained that their colony, which was new, weak, and but indifferently fortified, lay in the midst of hostile states, Istrians and Illyrians; and begged the senate to take into consideration some method of strengthening it. [6] These, being asked whether they wished that matter to be given in charge to the consul Caius Cassius, replied, that Cassius, after assembling his forces at Aquileia, had set out on a march through Illyricum into Macedon. The fact was at first deemed incredible, and each individual was under the impression that he had gone on an expedition against the Carnians, or perhaps the Istrians. [7] The Aquileians then said, that all that they knew, or could take upon them to affirm, was that corn [8??] for thirty days had been given to the soldiers, and that guides, who knew the roads from Italy to Macedon, had been sought for and carried with him. [9] The senate were highly displeased that the consul should presume to act so improperly as to leave his own province, and remove into that of another; and lead his army by a new and dangerous route through foreign states, and thereby open for so many nations a passage into Italy. [10] Assembled in great numbers, they decreed that the praetor, Caius Sulpicius, should nominate out of the senate three deputies, who should set out from the city on that very day, make all possible haste to overtake the consul, Cassius, wherever he might be, and tell him not to engage in a war with any nation, [11??] unless that against which the senate voted that such war should be waged. These deputies left the city; Marcus Cornelius Cethegus, Marcus Fulvius, and Publius Marcius Rex. [12] The fears entertained for the consul and his [p. 2030]army caused the business of fortifying Aquileia to be postponed for that time.