I say, then, that all these six forms of government are pernicious—the three good kinds, from their brief duration the three bad, from their inherent badness. Wise legislators therefore, knowing these defects, and avoiding each of these forms in its simplicity, have made choice of a form which shares in the qualities of all the first three, and which they judge to be more stable and lasting than any of these separately. For where we have a monarchy, an aristocracy, and a democracy existing together in the same city, each of the three serves as a check upon the other.
Among those who have earned special praise by devising a constitution of this nature, was Lycurgus, who so framed the laws of Sparta as to assign their proper functions to kings, nobles, and commons; and in this way established a government, which, to his great glory and to the peace and tranquility of his country, lasted for more than eight hundred years. The contrary, however, happened in the case of Solon; who by the turn he gave to the institutions of Athens, created there a purely democratic government, of such brief duration, that I himself lived to witness the beginning of the despotism of Pisistratus. And although, forty years later, the heirs of Pisistratus were driven out, and Athens recovered her freedom, nevertheless because she reverted to the same form government as had been established by Solon, she could maintain it for only a hundred years more; for though to preserve it, many ordinances were passed for repressing the ambition of the great and the turbulence of the people, against which Solon had not provided, still, since neither the monarchic nor the aristocratic element was given a place in her constitution, Athens, as compared with Sparta, had but a short life.
But let us now turn to Rome, which city, although she had no Lycurgus to give her from the first such a constitution as would preserve her long in freedom, through a series of accidents, caused by the contests between the commons and the senate, obtained by chance what the foresight of her founders failed to provide. So that Fortune, if she bestowed not her first favours on Rome, bestowed her second; because, although the original institutions of this city were defective, still they lay not outside the true path which could bring them to perfection. For Romulus and the other kings made many and good laws, and such as were not incompatible with freedom; but because they sought to found a kingdom and not a commonwealth, when the city became free many things were found wanting which in the interest of liberty it was necessary to supply, since these kings had not supplied them. And although the kings of Rome lost their sovereignty, in the manner and for the causes mentioned above, nevertheless those who drove them out, by at once creating two consuls to take their place, preserved in Rome the regal authority while banishing from it the regal throne, so that as both senate and consuls were included in that republic, it in fact possessed two of the elements above enumerated, to wit, the monarchic and the aristocratic.