[1306b] the punishment indeed which Eurytion suffered at Heraclea was just, yet it was illegally executed: as was that at Thebes upon Archias; for their enemies endeavoured to have them publicly bound in the pillory. Many revolutions also have been brought about in oligarchies by those who could not brook the despotism which those persons assumed who were in power, as at Cnidus and Chios. Changes also may happen by accident in what we call a free state and in an oligarchy; wheresoever the senators, judges, and magistrates are chosen according to a certain census; for it often happens that the highest census is fixed at first; so that a few only could have a share in the government, in an oligarchy, or in a free state those of moderate fortunes only; when the city grows rich, through peace or some other happy cause, it becomes so little that every one's fortune is equal to the census, so that the whole community may partake of all the honours of government; and this change sometimes happens by little and little, and insensible approaches, sometimes quicker. These are the revolutions and seditions that arise in oligarchies, and the causes to which they are owing: and indeed both democracies and oligarchies sometimes alter, not into governments of a contrary form, but into those of the same government; as, for instance, from having the supreme power in the law to vest it in the ruling party, or the contrariwise.