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Yet Ancient Greek law contained major constitutional innovations in the development of democracy. The most prominent economic analyst of law is 1991 Nobel Prize winner Ronald Coase, whose first major article, The Nature of the Firm , argued that the reason for the existence of firms (companies, partnerships, etc.) is the existence of transaction costs. Rational individuals trade through bilateral contracts on open markets until the costs of transactions mean that using corporations to produce things is more cost-effective. His second major article, The Problem of Social Cost , argued that if we lived in a world without transaction costs, people would bargain with one another to create the same allocation of resources, regardless of the way a court might rule in property disputes.

• Definitions of law often raise the question of the extent to which law incorporates morality.
• Environmental law is increasingly important, especially in light of the Kyoto

Another example of tort might be a neighbour making excessively loud noises with machinery on his property. Torts can also involve intentional acts such as assault, battery or trespass. A better known tort is defamation, which occurs, for example, when a newspaper makes unsupportable allegations that damage a politician’s reputation. More infamous are economic torts, which form the basis of labour law in some countries by making trade unions liable for strikes, when statute does not provide immunity.

The current legal infrastructure in the People’s Republic of China was heavily influenced by Soviet Socialist law, which essentially inflates administrative law at the expense of private law rights. Due to rapid industrialisation, today China is undergoing a process of reform, at least in terms of economic, if not social and political, rights. A new contract code in 1999 represented a move away from administrative domination. Furthermore, after negotiations lasting fifteen years, …

John Austin’s utilitarian answer was that law is “commands, backed by threat of sanctions, from a sovereign, to whom people have a habit of obedience”. Natural lawyers on the other side, such as Jean-Jacques Rousseau, argue that law reflects essentially moral and unchangeable laws of nature. The concept of “natural law” emerged in ancient Greek philosophy concurrently and in connection with the notion of justice, and re-entered the mainstream of Western culture through the writings of Thomas Aquinas, notably his Treatise on Law.

Colour-coded map of the legal systems around the world, showing civil, common law, religious, customary and mixed legal systems. Common law systems are shaded pink, and civil law systems are shaded blue/turquoise. Texas Law students become rigorous analytical thinkers and world-changing professionals.

Thurman Arnold said that it is obvious that it is impossible to define the word “law” and that it is also equally obvious that the …

Coase used the example of a nuisance case named Sturges v Bridgman, where a noisy sweetmaker and a quiet doctor were neighbours and went to court to see who should have to move. So the law ought to pre-empt what would happen, and be guided by the most efficient solution. The idea is that law and regulation are not as important or effective at helping people as lawyers and government planners believe. Coase and others like him wanted a change of approach, to put the burden of proof for positive effects on a government that was intervening in the market, by analysing the costs of action.

This distinction is stronger in civil law countries, particularly those with a separate system of administrative courts; by contrast, the public-private law divide is less pronounced in common law jurisdictions. All legal systems deal with the same basic issues, but jurisdictions categorise and identify …