That he who attacks a city divided against itself, must not think to get possession of it through its divisions.
Violent dissensions breaking out in Rome between the commons and the nobles, it appeared to the Veientines and Etruscans that now was their time to deal a fatal blow to the Roman supremacy. Accordingly, they assembled an army and invaded the territories of Rome. The senate sent Caius Manlius and Marcus Fabius to meet them, whose forces encamping close by the Veientines, the latter ceased not to reproach and vilify the Roman name with every sort of taunt and abuse, and so incensed the Romans by their unmeasured insolence that, from being divided they became reconciled, and giving the enemy battle, broke and defeated them. Here, again, we see, what has already been noted, how prone men are to adopt wrong courses, and how often they miss their object when they think to secure it. The Veientines imagined that they could conquer the Romans by attacking them while they were at feud among themselves; but this very attack reunited the Romans and brought ruin on their assailants. For the causes of division in a commonwealth are, for the most part, ease and tranquillity, while the causes of union are fear and war. Wherefore, had the Veientines been wise, the more divided they saw Rome to be, the more should they have sought to avoid war with her, and endeavoured to gain an advantage over her by peaceful arts.