Rule of Law and Justice

Core Idea

Rule of law requires that government acts according to established law, applied equally and transparently. It protects against arbitrary power and corruption. Rule of law differs from rule by law: a dictatorship may have laws but apply them arbitrarily. True rule of law constrains power and ensures equal treatment.

How It's Best Learned

Compare legal systems with and without rule of law. Examine how separation of powers and independent courts support rule of law principles.

Common Misconceptions

• Rule of law does not require democratic government; authoritarian regimes can have rule of law (though often they don't).
• Rule of law concerns governance form, not law content; unjust laws can exist under rule of law.

Explainer

From your study of the rule-of-law concept and justice, you know the components of each separately. The rule of law requires that government acts through pre-established, publicly known, general rules applied equally and impartially — no one is above the law. Justice, as you've studied, concerns the fairness of distributions, procedures, and outcomes. The question here is how these two concepts relate, and what rule of law actually contributes to a just society.

The foundational distinction is between rule of law and rule by law. Both involve governing through legal rules, but they differ in whether law *constrains* power or merely *instruments* it. In a genuine rule-of-law system, even those who make the law are bound by it — the executive cannot act outside its legal authority, the legislature cannot retroactively criminalize conduct, and courts apply rules independently of political pressure. In a "rule by law" system (characteristic of many authoritarian regimes), laws exist, but they are applied selectively, changed to suit those in power, or suspended when inconvenient. The Nazi regime had extensive legislation; much of what it did was formally "lawful." This illustrates that legal form without genuine constraint is not rule of law.

Joseph Raz identified the core formal properties of rule of law: laws must be prospective (not retroactive), publicized, clear, stable, and generally applicable. Institutions must be able to adjudicate legal disputes impartially. These formal requirements protect persons against arbitrary government action — you can plan your life around known rules rather than guessing at official whims. Raz was deliberately thin in his account: rule of law concerns how power is exercised, not what content the laws have. This means unjust laws can exist under rule of law, and rule-of-law systems can coexist with significant injustice.

The deeper tension is whether formal rule of law is sufficient for justice, or whether substantive requirements must be added. Lon Fuller argued that law has an "inner morality" — genuinely general, stable, and prospective laws cannot be systematically used to oppress, because those properties build in a minimal protection of persons as agents capable of following rules. Ronald Dworkin went further: genuine rule of law requires not just procedural correctness but that laws be *interpretable as principled*, consistent with a coherent set of rights. On this view, a legal system cannot achieve real rule of law if its laws are systematically unjust, because unjust rules cannot be given a principled interpretation that treats persons with equal concern. The debate between thin and thick conceptions of rule of law is ultimately a debate about whether legal form and moral substance can be cleanly separated.