On the other hand, he who defends the method followed by the Spartans and Venetians, may urge, that by confiding this guardianship to the nobles, two desirable ends are served: first, that from being allowed to retain in their own hands a weapon which makes them the stronger party in the State, the ambition of this class is more fully satisfied; and, second, that an authority is withdrawn from the unstable multitude which as used by them is likely to lead to endless disputes and tumults, and to drive the nobles into dangerous and desperate courses. In instance whereof might be cited the case of Rome itself, wherein the tribunes of the people being vested with this authority, not content to have one consul a plebeian, insisted on having both; and afterwards laid claim to the censorship, the prætorship and all the other magistracies in the city. Nor was this enough for them, but, carried away by the same factious spirit, they began after a time to pay court to such men as they thought able to attack the nobility, and so gave occasion to the rise of Marius and the overthrow of Rome. Wherefore one who weighs both sides of the question well, might hesitate which party he should choose as the guardian of public liberty, being uncertain which class is more mischievous in a commonwealth, that which would acquire what it has not, or that which would keep the authority which it has already. But, on the whole, on a careful balance of arguments we may sum up thus:—Either we have to deal with a republic eager like Rome to extend its power, or with one content merely to maintain itself; in the former case it is necessary to do in all things as Rome did; in the latter, for the reasons and in the manner to be shown in the following Chapter, we may imitate Venice and Sparta.