Pure Theory of Law (Hans Kelsen)

2026-05-16

Exam Snapshot

Hans Kelsen's Pure Theory of Law is a cornerstone of legal positivism and a frequent topic in LLB entrance exams. Focus on its core tenets: purity of law, hierarchy of norms, and the concept of Grundnorm. Questions often test the distinction between 'ought' and 'is' and Kelsen's separation of law from other disciplines.

Core Concept: Pure Theory of Law

Kelsen's Pure Theory of Law (Reine Rechtslehre) proposes that law is a self-contained normative system that should be studied without the influence of morality, politics, sociology, or economics. He views law as a science of 'ought' (Sollen) propositions, distinct from the factual 'is' (Sein) statements of natural sciences.

Key Principles:

• Purity: Law must be purged of non-legal elements (e.g., ethics, politics, sociology) to establish a truly objective legal science.
• Normative Science: Law prescribes how people ought to behave, focusing on legal duties and rules, not empirical facts.
• Hierarchy of Norms (Stufenbau): Legal systems are structured like a pyramid. Each lower norm (e.g., statute, regulation) derives its validity from a superior norm (e.g., constitution). A norm is valid if it's created in a way prescribed by a higher norm.
• Grundnorm (Basic Norm): This is the ultimate, presupposed, hypothetical, or transcendental basic norm at the apex of the legal system. It's not a positive law but a logical presupposition that provides the foundational authority and unity for the entire legal order. It is the reason why the first constitution or founding legal act is considered binding.

Nepal Law Anchors

While Kelsen's theory is philosophical, its concept of a hierarchical legal system resonates with Nepal's legal structure:

• Nepal's Constitution (नेपालको संविधान): The Constitution of Nepal 2015 (2072 B.S.) is the supreme law of the land (धारा १). All other laws must be consistent with it. This establishes a clear hierarchy where the Constitution acts as the superior norm from which all other laws derive their validity, akin to Kelsen's Grundnorm in its function of ultimate validation (though Kelsen's Grundnorm itself is a presupposition, not a positive law).
• Legislative Hierarchy: Acts (ऐन) passed by Parliament are superior to rules (नियम) and regulations (विनियमावली) made by executive bodies.
• Judicial Review: The Supreme Court's power of judicial review ensures that laws are consistent with the Constitution, upholding the normative hierarchy.

Confusable Terms

MCQ Traps

• Grundnorm as Positive Law: Distractor questions might state the Grundnorm is a written constitution or a positive law. Remember, it's a presupposed, hypothetical norm, not enacted law.
• Purity vs. Morality: Questions often test if Kelsen includes morality in law. He explicitly excludes it.
• 'Is' vs. 'Ought': Misidentifying law as 'is' statements (facts) rather than 'ought' statements (norms).
• Kelsen's nationality: He was Austrian-American, not German or British.

Example

Imagine a traffic law in Nepal: "Vehicles must drive on the left side of the road." This is a norm. Its validity comes from the Traffic Act. The Traffic Act's validity comes from an enabling Act, which gets its validity from the Constitution. The Constitution's ultimate binding force is presupposed by Kelsen's Grundnorm, which allows us to consider the entire legal system valid.

Memory Hook

Think of Kelsen's Pure Theory like a "Klean Pyramid": Kelsen wants law Klean (pure), building a Pyramid (hierarchy) on a Presupposed base (Grundnorm).

Quick Revision

• Kelsen: Hans Kelsen (Austrian-American jurist).
• Core Idea: Law is a pure, self-contained normative science.
• Purity: No morality, politics, sociology.
• Law = 'Ought': Prescriptive, not descriptive.
• Hierarchy (Stufenbau): Laws derive validity from superior norms.
• Grundnorm: Ultimate, presupposed, hypothetical basic norm validating the entire system. Not a positive law.
• Positivism: A legal positivist theory.