Plato: Plato's ideal state was a republic with three categories of citizens: artisans, auxiliaries, and philosopher-kings, each of whom possessed distinct natures and capacities. Those proclivities, moreover, reflected a particular combination of elements within one's tripartite soul, composed of appetite, spirit, and reason. Artisans, for example, were dominated by their appetites or desires, and therefore destined to produce material goods. Auxiliaries, a class of guardians, were ruled by spirit in their souls and possessed the courage necessary to protect the state from invasion. Philosopher-kings, the leaders of the ideal state, had souls in which reason reigned over spirit and appetite, and as a result possessed the foresight and knowledge to rule wisely. In Plato's view, these rulers were not merely elite intellectuals, but moral leaders. In the just state, each class of citizen had a distinct duty to remain faithful to its determined nature and engage solely in its destined occupation. The proper management of one's soul would yield immediate happiness and well-being, and specific educational methods would cultivate this brand of spiritual and civic harmony.

Herodotus: He had divided the forms of goverment as monarchy, aristocracy and democracy. He said when these goverments become perverted a fourth type of goverment called tyranny is established. Monarchy is a goverment by one ruler. When the rulers turn selfish, the goverment becomes perverts. Tyranny is the perverted form of one ruler's goverment.