Discourses on the First Decade of Titus Livius Chap. 3.32
Of the methods which some have used to make Peace impossible.

The towns of Cære and Velitræ, two of her own colonies, revolted from Rome in expectation of being protected by the Latins. But the Latins being routed and all hopes of help from that quarter at an end, many of the townsmen recommended that envoys should be sent to Rome to make their peace with the senate. This proposal, however, was defeated by those who had been the prime movers of the revolt, who, fearing that the whole punishment might fall on their heads, to put a stop to any talk of an adjustment, incited the multitude to take up arms and make a foray into the Roman territory.

And, in truth, when it is desired that a prince or people should banish from their minds every thought of reconciliation, there is no surer or more effectual plan than to incite them to inflict grave wrong on him with whom you would not have them be reconciled; for, then, the fear of that punishment which they will seem to themselves to have deserved, will always keep them apart. At the close of the first war waged by the Romans against Carthage, the soldiers who had served under the Carthaginians in Sardinia and Sicily, upon peace being proclaimed, returned to Africa; where, being dissatisfied with their pay, they mutinied against the Carthaginians, and choosing two of their number, Mato and Spendio, to be their leaders, seized and sacked many towns subject to Carthage. The Carthaginians, being loath to use force until they had tried all other methods for bringing them to reason, sent Hasdrubal, their fellow-citizen, to mediate with them, thinking that from formerly having commanded them he might be able to exercise some influence over them. But on his arrival, Spendio and Mato, to extinguish any hope these mutineers might have had of making peace with Carthage, and so leave them no alternative but war, persuaded them that their best course was to put Hasdrubal, with all the other Carthaginian citizens whom they had taken prisoners, to death. Whereupon, they not only put them to death, but first subjected them to an infinity of tortures; crowning their wickedness by a proclamation to the effect that every Carthaginian who might thereafter fall into their hands should meet a like fate. This advice, therefore, and its consummation had the effect of rendering these mutineers relentless and inveterate in their hostility to the Carthaginians.