Desiring, therefore, to discuss the nature of the government of Rome, and to ascertain the accidental circumstances which brought it to its perfection, I say, as has been said before by many who have written of Governments, that of these there are three forms, known by the names Monarchy, Aristocracy, and Democracy, and that those who give its institutions to a State have recourse to one or other of these three, according as it suits their purpose. Other, and, as many have thought, wiser teachers, will have it, that there are altogether six forms of government, three of them utterly bad, the other three good in themselves, but so readily corrupted that they too are apt to become hurtful. The good are the three above named; the bad, three others dependent upon these, and each so like that to which it is related, that it is easy to pass imperceptibly from the one to the other. For a Monarchy readily becomes a Tyranny, an Aristocracy an Oligarchy, while a Democracy tends to degenerate into Anarchy. So that if the founder of a State should establish any one of these three forms of Government, he establishes it for a short time only, since no precaution he may take can prevent it from sliding into its contrary, by reason of the close resemblance which, in this case, the virtue bears to the vice.