Introduction
In his political treatise, Aristotle departed from Plato's utopian idealism of the 'Philosopher King' by empirically studying 158 constitutions to determine not just the ideal state, but the best practicable one. He identified 'Polity'—a constitutional government ruled by the many in the common interest—as the most stable, feasible, and durable system of governance achievable in human society.
Aristotle's Typology of Constitutions
Aristotle categorized governments based on two criteria: the number of rulers (one, few, or many) and the ethical orientation of rule (for the common good versus self-interest):
- Rule of One: Monarchy (pure, aiming at common welfare) degenerates into Tyranny (perverted, serving the ruler's self-interest).
- Rule of Few: Aristocracy (pure, rule by the virtuous) degenerates into Oligarchy (perverted, rule by the wealthy for their own gain).
- Rule of Many: Polity (pure constitutional rule by the many for the collective good) degenerates into Democracy (perverted, viewed by Aristotle as unstable mob rule by the impoverished majority).
Why Polity is the 'Best Practicable' Government
While an ideal aristocracy or monarchy might theoretically represent the pinnacle of virtue, human fallibility makes them difficult to realize and sustain. Aristotle advocated Polity as the most practicable regime based on core philosophical and sociological arguments:
- Application of the 'Golden Mean': Rooted in his Nicomachean Ethics, Aristotle posited that virtue lies in a moderate state between two extremes. Polity applies this ethical mean to political organization by creating a mixed constitution that balances the extreme wealth of Oligarchy with the extreme poverty of radical Democracy.
- Preponderance of the Middle Class: Aristotle observed that societies are divided into the very rich, the very poor, and the middle class. The rich often become arrogant and incapable of being ruled, while the poor are often desperate, envious, and prone to subservience. The middle class possesses moderate and sufficient property, is guided by reason, and serves as an impartial buffer against factional strife and revolution.
- Supremacy of Law over Men: Polity is fundamentally constitutional. It subordinates individual caprice to the objective authority of codified law. Because law represents 'reason free from passion', it prevents governance from degenerating into the factional self-interest of any single economic class.
Conclusion
By blending broad civic participation with institutional equilibrium, Aristotle's Polity established the philosophical underpinnings of modern constitutionalism. His thesis remains remarkably prescient, demonstrating that enduring democratic stability rests upon the supremacy of the rule of law and a robust, moderate middle class.