Aristotle's Politics Books 2 & 3

Aristotle opens Book II of the Politics by stating his aim: to identify the best constitution for those capable of living ideally. Since existing constitutions fall short, he proposes to examine both well-governed city-states and theoretical constitutions proposed by philosophers. He begins with a fundamental question: What should citizens share—everything, nothing, or only some things?

In Book II, Aristotle encourages us to study what is deficient and immediately turns to Plato’s Republic and Laws. This sudden pivot introduces a layer of irony, possibly tongue-in-cheek, especially if Aristotle means something different from what he explicitly says. How, then, are we to read him—particularly when he seems to undermine his own arguments? A comparison with his discussion of natural slavery is illuminating: there, he appears to defend slavery by nature, yet his definition renders it impossible to identify a “natural” slave. If we cannot fully trust the Politics, what does that imply about the Ethics, which shares similar assumptions?

Aristotle launches a detailed critique of Plato’s proposals for communal property, wives, and children. His objections are both conceptual and empirical:

• On unity: Socrates assumes maximum unity is the highest good, but Aristotle argues that this destroys the essence of a city-state. A polis is constituted by diversity; reducing it to complete unity turns it first into a household, then into a single individual—undermining its political nature. Just as harmony is not unison, and rhythm is not a single beat, excessive unity obliterates what it aims to perfect.

• On communal property and relationships: Aristotle attacks the logic and practicality of Plato’s model. Logically, Socrates equivocates on the term “all”—collective ownership by “all” does not translate into individual ownership, resulting in a lack of personal responsibility. Empirically, what is held in common tends to be neglected. “A thousand parents” means no real parents; affection and care arise from personal ownership. Furthermore, private property fosters virtues like generosity and temperance. Historically, such communal arrangements are not new—and if they were effective, they wouldn’t have been abandoned. Practically, Plato’s system is unworkable: who manages households if both women and property are shared? And how can farmers be taxed while denied political rights?

• On happiness and the guardian class: Aristotle identifies a fatal contradiction—if the guardians, who lack private property and families, cannot be happy, how can the polis be happy as a whole? Happiness, unlike mathematical properties, cannot exist in the whole unless it exists in the parts.

Plato’s Laws offers a more realistic constitution, yet Aristotle finds it similarly flawed. Though it claims to blend democracy and monarchy, it in fact leans oligarchic. Its proposed citizen body (5,040) would require a territory as vast as Babylon. The constitution fails to regulate population growth, offers a vague standard for wealth (”live temperately”), and introduces flawed election procedures vulnerable to manipulation by small groups. The result is a constitution that is at once overly idealistic and insufficiently practical.

Turning to other theorists, Aristotle critiques Phaleas of Chalcedon, who proposes property equality as the solution to political conflict. Aristotle’s response marks a shift toward deeper empiricism. Economic equality addresses only one source of faction: people still resent unequal honors. More crucially, injustice arises not only from need but also from the pursuit of pleasure and excess. No one becomes a tyrant just to avoid poverty—they do so for power and luxury. Aristotle argues the real solution lies not in leveling property, but in educating desires. Yet even education may fail to overcome human greed, which tends to inflate needs over time. Phaleas also overlooks military and security implications—equalizing land but ignoring slaves, livestock, or movable wealth creates more problems than it solves.

Hippodamus of Miletus proposes a tripartite citizenry—craftsmen, farmers, and warriors—with corresponding land divisions. Aristotle critiques this as internally inconsistent. If only warriors govern, the other classes become politically disenfranchised, resembling slaves. If warriors must outnumber the others, why include non-warriors at all? His land division creates logistical confusion: who works which land, and how are two households supported per citizen? Hippodamus’s proposed legal reforms (graduated verdicts) are impractical for large juries, and his rewards for innovation would incentivize opportunism and destabilize the regime.

These critiques lead Aristotle to reflect more broadly on legal change. While other sciences improve by revision, laws must balance stability with adaptability. Ancient laws were crude—early Greek bride purchases and naive homicide rules in Cyme testify to this—but laws cannot capture every particular, creating tension between permanence and reform.

Throughout, Aristotle’s method reveals itself: political theory must be grounded in human nature, historical experience, and practical feasibility. He does not reject ideals but insists they be tempered by reality. Humans are naturally diverse, possessive, insatiably desirous, and resentful of both inequality and forced equality. The “best” constitution must be not only logically consistent but also achievable. Education and character formation matter more than institutional design. Crucially, a city-state requires reciprocal equality among diverse citizens—the very multiplicity that Plato’s unity ideal would erase.

The Politics is, in many ways, a strange book. Its naturalism is difficult to take at face value. Aristotle moves between descriptions of “what usually happens” and prescriptions of “what ought to be,” yet the connection between the two is often ambiguous. His teleological method seems to rest on an equivocation: if what is “natural” is simply “what usually occurs,” then there is little room for political idealism. But if it means “what fulfills a purpose,” then the justification must come from something more than observation.

Aristotle is also ironic—he criticizes unrealistic proposals while urging citizens to “be better,” despite his pessimism about human perfectibility. This tension appears in his discussions of property and virtue. Why critique shared property with such weak arguments, unless to subtly signal that the real issue lies elsewhere?

Finally, it’s worth noting that Aristotle assumes a static economy without growth. His discussions of property are, in effect, debates about income distribution. The absence of a growth framework makes his economic assumptions all the more revealing—they reflect a world where redistribution, not expansion, defines political possibility.

In Book III of the Politics, Aristotle shifts his focus to the constitution itself: who should be considered a citizen, what role citizenship plays, and how political community is structured through participation and law. His central concern is to clarify the nature of citizenship, examine the composition of the citizen body, and explore the proper organization of political power. This inquiry is essential for identifying the best achievable constitution, grounded in human nature and practical realities.

Aristotle opens by emphasizing that citizenship is fundamentally defined by participation in the judicial and deliberative functions of the polis. Unlike a modern notion of citizenship as mere residency or legal status, for Aristotle, being a citizen means actively ruling and being ruled in turn. This reciprocity distinguishes citizens from subjects or servants. Importantly, this definition is flexible: the citizen body varies depending on the constitution and its institutions, reflecting different roles and scopes of participation.

This leads Aristotle to a vital methodological point: constitutions must align with the nature of their citizenry. For instance, in oligarchies, the wealthy hold political power, while in democracies, all free males (usually property holders) participate. Aristotle’s approach here balances empirical observation of existing city-states with normative analysis of what political roles best suit different people.

A crucial question arises: who qualifies as a citizen? Aristotle critiques extreme inclusivity and exclusivity alike. He argues that citizens must be free, adult males who share in political power, yet the precise boundaries depend on each city’s customs and laws. This flexibility acknowledges human diversity but also creates ambiguity—an ambiguity Aristotle neither fully resolves nor dismisses.

Aristotle then addresses the composition of the citizen body, emphasizing the need for a balanced and stable polity. He warns against factionalism that arises when wealth, birth, or virtue become the sole criteria for citizenship, as such exclusivity breeds resentment and instability. Instead, he advocates for a middle ground: constitutions that encourage a broad but politically active middle class, capable of mediating between extremes of wealth and poverty. This “golden mean” of political inclusion, Aristotle suggests, supports social cohesion and stability.

Moving to the question of political offices and magistracies, Aristotle insists these should be filled in ways that reflect the constitution’s character and citizen virtues. Selection by election or sortition depends on context; election rewards merit, while sortition preserves equality. Aristotle is wary of concentrating power in a few hands, and his nuanced approach reflects his broader political prudence.

The issue of the rule of law versus rule of individuals also takes center stage. Aristotle champions the rule of law as superior because laws, when well-crafted, embody reason and justice more reliably than fallible rulers. Yet he recognizes that laws must be adaptable and supported by the virtue of citizens and magistrates, revealing his skepticism toward rigid legalism detached from human character.

Aristotle’s treatment of justice in Book III is both technical and practical. He distinguishes between “distributive” and “corrective” justice, grounding political equality in proportion rather than numerical equality. Justice requires giving people their due according to merit, contribution, or need, but Aristotle carefully notes that this proportionality varies with the constitution’s form. For example, in a democracy, equality among citizens might mean equal political voice, while in an oligarchy, it might mean proportional influence by wealth. This approach reveals Aristotle’s pragmatic acceptance of different, context-dependent notions of justice.

The question of regime stability and the prevention of factional strife emerges as a continuous theme. Aristotle identifies multiple sources of conflict—wealth disparity, honor, birth, and power—and insists constitutions must actively address these tensions through balanced citizenship and laws fostering shared interests. He criticizes the tendency of extreme regimes to devolve into tyranny or mob rule, emphasizing moderation and mixed constitutions as ideal solutions.

Throughout Book III, Aristotle maintains a tension between ideal political arrangements and what is practically achievable. Like in Book II, he balances teleological reasoning (what a polis ought to be) with empirical observation (what actually exists). His prescriptions are deeply shaped by assumptions about human nature: humans are political animals capable of virtue but also prone to faction, envy, and ambition.

Aristotle’s irony and ambivalence appear again. He promotes broad political participation yet excludes women, slaves, and many resident aliens from citizenship without fully explaining why this exclusion is just or necessary. His emphasis on reciprocity and mutual rule raises questions about the limits of inclusion and the ideal scope of political community.

Finally, Book III implicitly acknowledges the limits of political theory itself. The variability in constitutions and citizen definitions reflects the complexity of human societies. Aristotle’s method is therefore neither rigid blueprint nor idealistic fantasy but a practical framework that encourages adaptation, balance, and education to foster the polis’s flourishing.