Jurisprudence

Nature, sources and schools of law

The nature of law is contested because law performs several jobs at once: it guides conduct, settles disputes, allocates power, and expresses a community's values. A positivist account stresses pedigree and recognition: a rule counts as law when it is made or recognised through the system's accepted procedures, whether or not it is morally attractive. A natural law account stresses moral content: law worthy of the name must be oriented toward reason and the common good, and a grossly unjust enactment fails as law in a fuller sense. A historical account stresses growth: law emerges from custom, habit, and the slow sediment of social practice rather than from a single act of will. A sociological account stresses function: law is best understood by what it does in society, how it is actually used, and whose interests it serves. A realist account stresses decision: law in action is what officials, especially judges, actually do, so prediction of decisions matters as much as the text of rules. No single school answers every question; examiners reward answers that state a school's core claim, give its best argument, and name its blind spot.

Sources of law are usually divided into formal and material sources. Formal sources are the channels through which a rule acquires legal authority, such as legislation, judicial precedent, and recognised custom. Material sources are the social, economic, and historical materials from which the content of law is drawn, such as ideas of fairness, commercial practice, religious tradition, and expert opinion. Legislation is the most deliberate source: it can change law quickly, prospectively, and comprehensively, but it depends on political will and drafting quality. Precedent gives law stability and incremental growth, because like cases are decided alike, yet it can entrench old errors and develop slowly. Custom shows law's rootedness in lived practice, but only customs that are long-standing, continuous, peaceful, and not opposed to public policy tend to be recognised. Comparative and international materials increasingly influence domestic law, especially in human rights, commerce, and environmental protection, without automatically becoming binding law. A strong answer therefore separates three questions that beginners merge: where did this rule come from, why is it authoritative, and is it good law?

Schools of jurisprudence also differ in method. Analytical jurisprudence clarifies concepts and the structure of legal systems. Historical jurisprudence traces development over time. Sociological jurisprudence studies law in its social setting and measures effectiveness. Economic analysis asks about incentives and efficiency, while critical approaches ask whose power law entrenches and whose voice it silences. Feminist and postcolonial perspectives add that apparently neutral rules can operate differently for differently situated people. The examination skill is not memorising labels but using them: given a problem about a judge filling a gap, a legislature reforming a field, or a custom clashing with a statute, say which school illuminates the problem, what it would predict or prescribe, and where a rival school would object.

Law, morality, rights and personality

Law and morality overlap but are not identical. Much law enacts moral judgments, as in prohibitions on killing and theft, and much moral life is expressed through law, as in duties of care and honesty. Yet the two systems differ in source, sanction, and scope. Law is institutional: it is made, interpreted, and enforced by recognised authorities, with organised sanctions. Morality is broader and more diffuse: it binds conscience and social judgment even where no court will intervene. A rule can therefore be legally valid but morally criticised, and a moral duty can be widely felt without being a legal duty. The practical question is not whether law and morality are connected in the abstract, but how a particular legal argument should use moral reasons: to interpret vague language, to fill gaps, to justify reform, or to challenge an unjust rule. Judges routinely use moral reasoning when they interpret open-textured terms such as reasonableness, fairness, and public interest, even in systems that insist on separating law as it is from law as it ought to be.

Rights are best understood as protected interests backed by duties in others. A claim-right in one person correlates with a duty in another; a liberty means no duty to refrain; a power is an ability to change legal relations, as in making a contract or a will; an immunity protects a person from having a legal relation changed by another. Hohfeld's vocabulary prevents the common error of calling every interest a right. A right may be perfect when it has a determinate duty-bearer and an enforcement mechanism, or imperfect when it expresses an important interest without a directly enforceable counterpart. Rights may be classified as rights in personam, enforceable against specific persons, and rights in rem, enforceable against the world at large, a distinction central to property and tort. Rights may also be positive, requiring action or provision, or negative, requiring restraint. Legal personality asks who can bear such rights and duties. Natural persons hold personality from birth, while legal persons such as companies, institutions, and other recognised entities hold personality by legal recognition, allowing them to own property, contract, and sue or be sued. The point of legal personality is practical: it lets collective activity be organised, assets separated, and responsibility allocated, while doctrines such as lifting the corporate veil prevent personality from becoming a shield for fraud or evasion.

Property, ownership, possession and liability

Property is not a single thing but a bundle of relations between persons with respect to things: rights to use, to exclude others, to transfer, and to enjoy fruits and income, each capable of being divided, limited, or shared. Ownership is the most complete interest recognised in a thing, though it is rarely absolute: planning controls, neighbour duties, public interests, and the rights of others all limit what an owner may do. Ownership must be distinguished from possession, which is factual control accompanied by an intention to hold as one's own. A thief may possess without owning, an owner may own without possessing, and a bailee may possess on behalf of another. Possession matters because it is evidence of title, because it is protected against disturbance even before title is proved, and because it supports doctrines that reward stable, open control over time. Modes of acquiring ownership include original acquisition, transfer, succession, and prescription, while co-ownership and limited interests such as leases, easements, and security interests show how the bundle can be split across persons and purposes.

Liability answers a different question: when must a person answer for conduct or its consequences? Civil liability typically aims at compensation, restoring the injured party as far as money can, while criminal liability aims at punishment, condemnation, and deterrence, imposed by the state on proof of a higher standard. Liability may be based on fault, where intention, recklessness, or negligence is required, or it may be strict, where liability follows without proof of fault because the activity is especially hazardous or because policy places the risk on the person who creates or benefits from it. Vicarious liability extends responsibility to a person, commonly an employer, for acts of another done in the course of an employment relationship, on the ground that the enterprise should bear the costs of risks it creates. Theories of punishment and of compensation both matter here: retribution looks backward to desert, deterrence looks forward to prevention, reform looks to rehabilitation, and compensation looks to the victim's loss. An examiner's favourite trap is to treat liability as a single idea; a strong answer always specifies the branch, the standard, the basis of fault or its absence, and the remedy that follows.

Law, development and justice

Law and development are linked in both directions. Law can enable development by securing property, enforcing contracts, protecting investment, and providing predictable procedures for resolving disputes. Without reliable enforcement, exchange becomes risky, credit becomes expensive, and long-term planning becomes difficult. At the same time, development reshapes law: industrialisation, urbanisation, digital commerce, and environmental pressure generate new disputes and new regulatory fields, from consumer protection to data governance. A purely formal account of development, focused on rules on paper, misses the institutional conditions that make rules effective: independent courts, competent administration, access to legal help, and public trust. Where access is costly, slow, or uneven, formal rights may exist without real remedies, and development benefits may concentrate among those already able to use the system.

Justice supplies the standard by which these arrangements are judged. Formal justice demands like cases be treated alike and rules be applied consistently. Substantive justice asks about outcomes: whether distributions of resources, opportunities, and burdens are fair, and whether procedures give affected people a real voice. Corrective justice concerns restoring a wronged party, distributive justice concerns sharing benefits and burdens across society, and procedural justice concerns fairness of the process itself, including notice, hearing, impartiality, and reasoned decisions. Theories differ: some emphasise liberty and protection from interference, some emphasise equality of opportunity, some emphasise meeting basic needs, and some emphasise participation and recognition. In examination answers, the most persuasive move is to apply more than one lens to the same reform: a measure may advance efficiency and formal equality while worsening substantive inequality, or may improve access while weakening consistency. Law is then judged not by a single slogan but by how it balances liberty, equality, welfare, and participation under real institutional constraints, and by whether its losers retain voice, remedy, and dignity.

Schools of jurisprudence compared

Rights and liability distinctions