What Is Law?

From its earliest formulations in the ancient Mesopotamian tablets to modern constitutional systems, the concept of law has been a field of intellectual battlefield where antagonistic visions of freedom, power and justice clash. The different schools of legal thought are not mere academic categories, but profound expressions of how societies conceive their ethical and political foundations.

In the classical tradition, Aristotle laid the foundations by defining law as "justice applied to human relations", while Roman jurists developed the first integrated legal system where ius civile for citizens, ius gentium for relations between peoples and ius naturale as a universal guiding principle coexisted. This triad already reflected the permanent tension between the particular and the universal that would continue to shape all later theories.

The Middle Ages crystallized the theocentric vision of law through Thomas Aquinas, for whom it represented "the rational ordering to the common good". However, Renaissance humanism would begin to shift this approach toward a more secular conception, paving the way for later intellectual revolutions.

The Enlightenment marked a turning point when thinkers such as Montesquieu linked law to "the necessary relations that emanate from nature", and Kant defined it as "the framework for the coexistence of freedoms". These ideas would fuel liberal constitutionalism and its defense of limits on state power.

It was in the 19th century when the debate reached its maximum complexity. The German Historical School of Savigny proposed understanding law as "organic expression of the popular spirit", while the Marxism reduced it to "instrument of class domination". As a reaction, John Austin's legal positivism insisted on seeing it simply as "commands of the sovereign backed by force", radically divorcing law from moral considerations.

In this landscape emerged the Austrian School with revolutionary contributions. Ludwig von Mises, in his radical defense of liberalism, understood law as "the institutional framework that protects private property and voluntary contracts", the only system compatible with the rational economic calculation and social peace. His disciple Hayek would add the crucial distinction between spontaneous norms (customary law) and legal constructivism (state legislation).

The 20th century saw the forceful emergence of the objectivism of Ayn Rand, whose philosophical approach -documented from her works available on AynRand.org with Spanish subtitles- defined law as "the institutionalization of the prohibition of physical force in human relations", exclusively protecting the negative rights to life, liberty and property. Her scathing critique of "positive law" and of any redistributive legislation as a form of state coercion represented one of the most radical stances in defense of individualism.

In parallel, the libertarianism of authors like Rothbard would take these ideas to their ultimate consequences, proposing a stateless society where law would emerge entirely from mutual consent and private agreements. This perspective clashed head-on with dominant views such as Kelsen's normativism and his "hierarchical system of norms", Hart's analytical positivism or Dworkin's interpretivism.

In recent decades, new voices have enriched this ongoing dialogue. Critical theory denounces law as "a discourse of power", neoconstitutionalists see it as "the realization of fundamental values," and economic analysis evaluates it for its "social efficiency". The libertarian school has gained influence with innovative proposals on decentralized legal systems and polycentric law.

This conceptual evolution shows that law has never been a static set of norms, but a living debate about the limits of power, the foundations of justice and the difficult balance between individual freedom and social order. From the earliest codifications to current controversies over digital rights and artificial intelligence, each era has reformulated the essential questions: Should law reflect prevailing morality or be neutral? Is it primarily an instrument of social change or a barrier against tyranny? How to reconcile legal certainty with adaptability?

Answers have varied according to the schools of thought, but the dialogue remains open, demonstrating that law -like society itself- is an unfinished work, shaped by the creative tensions between tradition and innovation, between authority and freedom, between the individual and the collective. In this endless debate, liberal, libertarian and Objectivist voices have contributed fundamental critiques that continue to challenge established consensuses and broaden the horizons of legal thought.

Study law

Studying Law, across its various academic institutions, shares a fundamental core in its curricula, ensuring that all future professionals acquire the conceptual tools and essential skills to perform effectively in the legal field and reach their full potential. This uniformity seeks to guarantee a solid base of knowledge and competencies that are essential in the practice of the career.

From the start of the degree, students enter a fascinating universe of interconnected disciplines. Morality stands as one of the central pillars, since law, in its essence, seeks to regulate human conduct and establish principles of justice. It is not limited to a set of rules, but explores the "ought to be" and the values that underpin a fair society.

Sociology is another vitally important subject that accompanies students throughout their education. Through it, you understand the complexities of social interaction, community structures, behavior patterns and historical processes that shape legal regulations. Understanding how a society works, how it evolves and how it is organized is crucial to applying law in a contextualized and effective way. In addition, subjects like philosophy of law delve into the ethical and epistemological foundations of justice, law and morality, inviting critical reflection on the purpose and limits of the legal order.

The role of the lawyer goes beyond merely memorizing laws. Legal training gives professionals an unmatched capacity for critical analysis and comprehensive reading. They are expected to be able to interpret not only established codes and regulations, but also doctrinal works, case-law analyses and texts that address social, economic and political issues, whose nuances often escape the rigidity of the cold letter of the law. This ability to contextualize and argue, to go beyond "hard data", is what distinguishes a competent jurist.

During the degree, students become familiar with a broad range of codes and regulations that govern social coexistence: civil, criminal, labor, administrative, international, among others. This immersion in the legal framework allows them to understand the structure of the legal system and the consequences that result from breaking the laws. They learn that every disorder or violation of the rules carries a sanction, whose severity will depend on the nature of the offense and the applicable legal provisions.

It is undeniable that law is a dynamic and constantly evolving field. Societies change, technologies advance and new problems emerge, leading to changes in the norms and laws that govern human life. However, this evolution cannot be fully understood without a solid understanding of the bases and foundations of law. This implies knowing both its rational principles, those grounded in logic and argumentation, and its historical, cultural and philosophical elements, which do not always follow Cartesian logic but are equally vital to understanding it. Only by internalizing these foundations can lawyers adapt to change, interpret new regulations and contribute to a fair and equitable legal system that is truly part of their professional essence.

Learn Law in:

Argentina
Universidad de Buenos Aires (UBA) , Universidad Nacional de Córdoba , Universidad Nacional de La Plata , Pontificia Universidad Católica Argentina , 

Spain
Universidad Complutense de Madrid , Universidad Autónoma de Madrid , Universidad de Valencia , Universidad de Salamanca , Universidad de Granada , Universidad de Sevilla , Universidad de Santiago de Compostela , Universidad de Deusto , Universidad Carlos III de Madrid , Universitat Pompeu Fabra , Universidad de Navarra ,

Mexico
Universidad Nacional Autónoma de México (UNAM) , Instituto Tecnológico Autónomo de México (ITAM) , Universidad Iberoamericana , Benemérita Universidad Autónoma de Puebla (BUAP) , Universidad Autónoma Metropolitana (UAM) , Universidad de Guadalajara .

Colombia
Universidad Nacional de Colombia , Universidad de los Andes , Pontificia Universidad Javeriana , Universidad Externado de Colombia , Universidad del Rosario .

Chile
Universidad de Chile , Pontificia Universidad Católica de Chile , Universidad de Concepción , Universidad Diego Portales .

Peru
Pontificia Universidad Católica del Perú (PUCP) , Universidad Nacional Mayor de San Marcos , Universidad de Lima , Universidad Peruana de Ciencias Aplicadas (UPC) .

Ecuador
Universidad Central del Ecuador , Pontificia Universidad Católica del Ecuador , Universidad San Francisco de Quito .

Uruguay
Universidad de la República , Universidad Católica del Uruguay .

Costa Rica
Universidad de Costa Rica , Universidad Latina de Costa Rica .

Cuba
Universidad de La Habana .

Dominican Republic
Universidad Autónoma de Santo Domingo (UASD) , Pontificia Universidad Católica Madre y Maestra (PUCMM) .

Bolivia
Universidad Mayor de San Andrés , Universidad Privada Boliviana .

Guatemala
Universidad de San Carlos de Guatemala , Universidad Rafael Landívar .

Honduras
Universidad Nacional Autónoma de Honduras .

El Salvador
Universidad de El Salvador , Universidad Centroamericana "José Simeón Cañas" .

Paraguay
Universidad Nacional de Asunción , Universidad Católica "Nuestra Señora de la Asunción" .