The second pique they had against him was his opposing the law by which the city was to be divided; for the tribunes of the people brought forward a motion that the people and senate should be divided into two parts, one of which should remain at home, the other, as the lot should decide, remove to the new-taken city. By which means they should not only have much more room, but, by the advantage of two great and magnificent cities, be better able to maintain their territories and their fortunes in general. The people, therefore, who were numerous and indigent, greedily embraced it, and crowded continually to the forum, with tumultuous demands to have it put to the vote. But the senate and the noblest citizens, judging the proceedings of the tribunes to tend rather to a destruction than a division of Rome, greatly averse to it, went to Camillus for assistance, who, fearing the result if it came to a direct contest, contrived to occupy the people with other business, and so staved it off. He thus became unpopular.
And now the tribunes of the people again resuming their motion for the division of the city, the war against the Faliscans luckily broke out, giving liberty to the chief citizens to choose what magistrates they pleased, and to appoint Camillus military tribune, with five colleagues; affairs then requiring a commander of authority and reputation, as well as experience. And when the people had ratified the election, he marched with his forces into the territories of the Faliscans, and laid siege to Falerii, a well-fortified city, and plentifully stored with all necessaries of war. And although he perceived it would be so small work to take it, and no little time would be required for it, yet he was willing to exercise the citizens and keep them abroad, that they might have no leisure, idling at home, to follow the tribunes in factions and seditions: a very common remedy, indeed, with the Romans, who thus carried off, like good physicians, the ill humors of their commonwealth. The Falerians (The Falerians, in this narrative, are the people of the town; the Faliscans, the nation in general.), trusting in the strength of their city, which was well fortified on all sides, made so little account of the siege, that all, with the exception of those that guarded the walls, as in times of peace, walked about the streets in their common dress;the boys went to school, and were led by their master to play and exercise about the town walls; for the Falerians, like the Greeks, used to have a single teacher for many pupils, wishing their children to live and be brought up from the beginning in each others company.
This schoolmaster, designing to betray the Falerians by their children, led them out every day under the town wall, at first but a little way, and, when they had exercised, brought them home again. Afterwards by degrees he drew them farther and farther, till by practice he had made them bold and fearless, as if no danger was about them; and at last, having got them all together, he brought them to the outposts of the Romans, and delivered them up, demanding to be led to Camillus. Where being come, and standing in the middle, he said that he was the master and teacher of these children, but, preferring his favor before all other obligations, he had come to deliver up his charge to him, and, in that, the whole city. When Camillus had heard him out, he was astounded at the treachery of the act, and, turning to the standers-by observed that, "War, indeed, is of necessity attended with much injustice and violence! Certain laws, however, all good men observe even in war itself, nor is victory so great an object as to induce us to incur for its sake obligations for base and impious acts. A great general should rely on his own virtue, and not other men's vices." Which said, he commanded the officers to tear off the man's clothes, and bind his hands behind him and give the boys rods and scourges, to punish the traitor and drive him back to the city. By this time the Falerians had discovered the treachery of the schoolmaster, and the city, as was likely, was full of lamentations and cries for their calamity, men and women of worth running in distraction about the walls and gates; when, behold, the boys came whipping their master on, naked and bound, calling Camillus their preserver and god and father; so that it struck not only the parents, but the rest of the citizens, with such admiration and love of Camillus's justice, that, immediately meeting in assembly, they sent ambassadors to him, to resign whatever they had to his disposal. Camillus sent them to Rome, where, being brought into the senate, they spoke to this purpose:
that the Romans, preferring justice before victory, had taught them rather to embrace submission than liberty; they did not so much confess themselves to be inferior in strength as they must acknowledge them to be superior in virtue. The senate remitted the whole matter to Camillus, to judge and order as he thought fit;who, taking a sum of money of the Falerians, and making a peace with the whole nation of Faliscans, returned home.