Subjective theory of value in the context of "Libertarian movement in the United States"

In the United States, libertarianism is a political philosophy promoting individual liberty. Libertarianism has been described as laissez-faire on economic issues while supporting civil liberties and personal freedom. The movement is often associated with a foreign policy of non-interventionism. Broadly, there are four principal traditions within libertarianism, namely the libertarianism that developed in the mid-20th century out of the revival tradition of classical liberalism in the United States after liberalism associated with the New Deal; the libertarianism developed in the 1950s by anarcho-capitalist author Murray Rothbard, who based it on the anti-New Deal Old Right and 19th-century libertarianism and American individualist anarchists such as Benjamin Tucker and Lysander Spooner while rejecting the labor theory of value in favor of Austrian School economics and the subjective theory of value; the libertarianism developed in the 1970s by Robert Nozick and founded in American and European classical liberal traditions; and the libertarianism associated with the Libertarian Party, which was founded in 1971, including politicians such as David Nolan and Ron Paul.

The right-libertarianism associated with people such as Murray Rothbard and Robert Nozick, whose book Anarchy, State, and Utopia received significant attention in academia according to David Lewis Schaefer, is the dominant form of libertarianism in the United States, compared to that of left-libertarianism. The latter is associated with the left-wing of the modern libertarian movement and more recently to the political positions associated with academic philosophers Hillel Steiner, Philippe Van Parijs and Peter Vallentyne that combine self-ownership with an egalitarian approach to natural resources; it is also related to anti-capitalist, free-market anarchist strands such as left-wing market anarchism, referred to as market-oriented left-libertarianism to distinguish itself from other forms of libertarianism.

The School of Salamanca (Spanish: Escuela de Salamanca) was an intellectual movement of 16th-century and 17th-century Iberian Scholastic theologians rooted in the intellectual and pedagogical work of Francisco de Vitoria. From the beginning of the 16th century, the traditional Catholic conception of man and of his relation to God and to the world had been informed by internal developments in the Italian Rennaissance and its humanism, but also been challenged by the Protestant Reformation and the new geographical discoveries and their consequences. These new problems were addressed by the School of Salamanca.

The name is derived from the University of Salamanca (Spain), where de Vitoria and other members of the school were based. The Salamanca School of economic thought is frequently regarded as an early precursor to the Austrian School of Economics. This is due to its development of the subjective theory of value, its advocacy for free-market principles, and its focus on the supply and demand of money—ideas that would eventually contribute to the modern concept of sound money.

The labor theory of value (LTV) is a theory of value that argues that the exchange value of a good or service is determined by the total amount of "socially necessary labor" required to produce it. The contrasting system is typically known as the subjective theory of value.

The LTV is usually associated with Marxian economics, although it originally appeared in the theories of earlier classical economists such as Adam Smith and David Ricardo, and later in anarchist economics. Smith saw the price of a commodity as a reflection of how much labor it can "save" the purchaser. The LTV is central to Marxist theory, which holds that capitalists' expropriation of the surplus value produced by the working class is exploitative. Modern mainstream economics rejects the LTV and uses a theory of value based on subjective preferences.

Islamic economics (Arabic: الاقتصاد الإسلامي) refers to the knowledge of economics or economic activities and processes in terms of Islamic principles and teachings. Islam has a set of specific moral norms and values about individual and social economic behavior. Therefore, it has its own economic system, which is based on its philosophical views and is compatible with the Islamic organization of other aspects of human behavior: social and political systems.

Islamic economics is a broad field, related to the more specific subset of Islamic commercial jurisprudence (Arabic: فقه المعاملات, fiqh al-mu'āmalāt). It is also an ideology of economics similar to the labour theory of value, which is "labour-based exchange and exchange-based labour". While there are differences between the two, Islamic economics still tends to be closer to labor theory rather than subjective theory.

The Austrian school is a heterodox school of economic thought that advocates strict adherence to methodological individualism, the concept that social phenomena result primarily from the motivations and actions of individuals along with their self-interest. Austrian-school theorists hold that economic theory should be exclusively derived from basic principles of human action.

The Austrian school originated in 1871 in Vienna with the work of Carl Menger, Eugen von Böhm-Bawerk, Friedrich von Wieser, and others. It was methodologically opposed to the Historical school, in a dispute known as Methodenstreit, or methodology quarrel. Current-day economists working in this tradition are located in many countries, but their work is still referred to as Austrian economics. Among the theoretical contributions of the early years of the Austrian school are the subjective theory of value, marginalism in price theory and the formulation of the economic calculation problem.

Carl Menger von Wolfensgrün (/ˈmɛŋɡər/ MENG-ghər; German: [ˈmɛŋɐ]; 28 February 1840 – 26 February 1921) was an Austrian economist who contributed to the marginal theory of value. Menger is considered the founder of the Austrian school of economics.

In building his marginalist approach, Menger rejected many established views of classical economics. He directly disputed the view of the "German school" that economic theory could be derived from history. Departing from the cost-of-production theory of value—the prevailing theory of Adam Smith, David Ricardo, and Karl Marx—Menger's subjective theory of value emphasized role of mutual agreement in deriving prices. Although he had few readers outside Vienna until late in his career, disciples including Eugen von Böhm-Bawerk and Friedrich von Wieser brought his theories into wider readership. Friedrich Hayek wrote that the Austrian school's "fundamental ideas belong fully and wholly to Carl Menger."