Oligarchy is a form of government in which power is held by a small group of people, typically the wealthy elite. It is often associated with corrupt and oppressive rule.
Aristotle:
Aristotle believed that oligarchy was a perversion of aristocracy, where rule was by the best individuals, rather than the best class.
Plato:
In "The Republic," Plato discussed the difference between aristocracy and oligarchy, and warned of the dangers of allowing wealth to determine political power.
James Madison:
In "The Federalist Papers," Madison discussed the potential for oligarchy in a republic and the need for constitutional checks and balances to prevent the concentration of power in the hands of the few.
Karl Marx:
Marx saw oligarchy as a characteristic of capitalist societies, where the ruling class uses its wealth and power to control the state and exploit the working class.
Polybius:
The ancient Greek historian Polybius argued that all governments have a tendency to devolve into oligarchy unless checked by balancing institutions.