I. Constitutionalization and the Expansion of Constitutional Law

First handout for the cours on Comparative Constitutionla Law

Index

I. Constitutionalization and the Expansion of Constitutional Law

 The Concept of Constitutionalization
 Material Constitution as Ontological Baseline
 Constitutional Principles and the Law of Principles
 Impact of Constitutional Principles Across the Legal Order

II. Legal Propositions

 Principles
o Goals and Generality
o Balancing and Proportionality
o Operationalization Through Rules
 Rules
o Specificity and Subsumption
o Legal Consequences and Direct Application
 Dispositions
o Specific Operative Norms

III. Lawyers as Coders: Turning Social Acts into Legal Norms

 Coding (From Specific to General)
o Social Acts to Legal Norms
o Dispositions to Rules (Case Law)
o Rules to Principles
 Decoding (From General to Specific)
o Principles to Rules
o Rules to Dispositions

IV. Lawyers as Guardians of Legal Coherence

 Consistency Between Principles, Rules, and Dispositions

 Subsumption (Formal Coherence)
 Principle-Based Reasoning (Substantive Coherence)
 Balancing and Optimization (Proportionality)

V. Interaction Between Principles and Rules in Constitutional Interpretation

 The Role of Principles in Clarifying Rules

VI. Policy-Driven Interpretation

 Tension Between Doctrinal Coherence and Empirical Reality

 Empirical Knowledge and Legal Application
 Optimization of Principles through Interdisciplinary Engagement
 Examples: Right to Water, Health, Digital Privacy, Environment

VII. The Principialization of Legal Orders

 Expansion of Constitutional Review
 Influence of International Human Rights Law
 Consequences for Legal Practice

, VIII. The Empirical Knowledge Gap in Judicial Decision-Making

 Risks of Ideological and Arbitrary Judgments
 Solutions: Expert Testimony, Judicial Training, Interdisciplinary Panels

IX. Proportionality Test and Its Importance

 Structure and Steps of Proportionality Analysis
 Comparative Perspective: Tiered Scrutiny vs. Proportionality
 Proportionality as a Tool for Balancing Conflicting Principles




1. Constitutionalization and the Expansion of Constitutional Law

Constitutional law transcends traditional boundaries, progressively permeating every aspect of the legal system
through a phenomenon known as constitutionalization. This process reflects the increasing recognition and
embedding of constitutional principles throughout the entire legal order, shaping legislation, jurisprudence, and
administrative practices alike.

At its core, constitutionalization is anchored in the concept of a material constitution—an ontological baseline that
identifies the essential elements every constitution must contain. Fundamentally, this includes provisions regulating
the supreme institutions of state authority, their interactions, and limitations. However, contemporary
constitutional law extends beyond these core regulations, embracing a broader scope and reaching the citizens
through bills of rights and principles, often described collectively as a 'law of principles.' That is, before you were
interested in constitutional law if you were interested in politics. Today you need to know constitutional law in
order to know the extent of your rights and duties.

These constitutional principles—such as democracy, rule of law, proportionality, human dignity, equality, freedom
of movement, right to housing…—explicitly or implicitly infuse the legal framework, exerting influence beyond
constitutional texts themselves. For instance, Germany's Federal Constitutional Court applies the principle of human
dignity to interpret laws affecting personal autonomy and privacy rights. Similarly, the proportionality principle is
extensively used by the European Court of Human Rights to balance individual rights against state interests in cases
like surveillance and freedom of expression.

The constitutionalization process signifies that these principles systematically guide the interpretation and
implementation of all laws, ensuring consistency with fundamental constitutional principles. Thus, constitutional
law today does not merely structure governmental authority; it actively shapes societal governance through
pervasive principles. This widespread influence underlines constitutional law's essential role in safeguarding rights,
promoting justice, and ensuring coherence across diverse legal fields.

2. Legal propositions

Traditional constitutional law was built on self-referential logic and linguistic coherence. It stood floating in the
ether of abstract legal reasoning. Lawyers ensured that its inner structure was logically coherent—dispositions were
coherent with rules, and rules with principles, all fitting together. The legal system, understood as a coherent set of
legal propositions, was self-contained, internally coherent, and logically independent of the outside world.

Principles, rules, and dispositions are the three ways of conceptualizing legal propositions. Principles and rules are
norms. Dispositions are the legal consequence of those norms.

1. Principles
o They express goals.
o They provide guidance rather than strict prescriptions.
o They require balancing according to the principle of proportionality when they are limited.
o They are more general than rules.
o To be operationalized, a principle couples with rules. And when a court directly applies a
principle, it is not applying it as a principle per se, but as a rule derived from it. For instance, if a