Plato
428–348 BC · Ancient Greek
The philosopher-king rules by wisdom, not by law; monarchy is the best regime when the ruler truly knows.
Plato makes the strongest case for monarchy ever advanced in Western philosophy. In the , the Eleatic Stranger argues that the art of politics is a form of knowledge, like medicine or navigation, and that the person who possesses this knowledge has the right to rule regardless of whether his subjects consent or resist. The true statesman is the royal weaver who harmonizes the different threads of civic life into a single, well-ordered fabric. Law, in this picture, is a blunt instrument: useful when no genuine knower is at hand, but always inferior to the living judgment of wisdom.
The classifies regimes by number of rulers and by lawfulness, yielding six forms. Among the lawful ones, monarchy is best, aristocracy second, democracy third; among the lawless ones, the ranking reverses, making tyranny the worst. The logic is simple. One wise ruler, unconstrained by the rigidity of written statutes, can respond to circumstances with precision. But one ignorant or vicious ruler, equally unconstrained, can do more damage than any mob.
In the , Plato softens this position. The aged Athenian Stranger proposes a mixed regime for the colony of Magnesia, combining monarchical authority with popular consent and the rule of law. He has come to doubt that a living philosopher-king will ever appear, so law must serve as the second-best pilot. Yet the 's argument remains the deeper one: if perfect knowledge were available, rule by one would be rule by the best.
"The king's allegiance is to knowledge and nothing else; he rules because he knows, whether his subjects like it or not."
"No law or ordinance has the right to sovereignty over true knowledge."
Plato bequeaths to the tradition a permanent tension. Monarchy is theoretically the best regime precisely because unified knowledge is superior to codified rules, yet the practical absence of such knowledge makes monarchy the most perilous gamble in politics.
Key work: Statesman