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In the foreword to Human Action: A Treatise on Economics, Mises explains complex market phenomena as “the outcomes of countless conscious, purposive actions, choices, and preferences of individuals, each of whom was trying as best as he or she could under the circumstances to attain various wants and ends and to avoid undesired consequences.” It is individual choices in response to personal subjective value judgments that ultimately determine market phenomena—supply and demand, prices, the pattern of production, and even profits and losses. Although governments may presume to set “prices,” it is individuals who, by their actions and choices through competitive bidding for money, products, and services, actually determine “prices”. Thus, Mises presents economics—not as a study of material goods, services, and products—but as a study of human actions. He sees the science of human action, praxeology, as a science of reason and logic, which recognizes a regularity in the sequence and interrelationships among market phenomena. Mises defends the methodology of praxeology against the criticisms of Marxists, socialists, positivists, and mathematical statisticians. Mises attributes the tremendous technological progress and the consequent increase in wealth and general welfare in the last two centuries to the introduction of liberal government policies based on free-market economic teachings, creating an economic and political environment which permits individuals to pursue their respective goals in freedom and peace. Mises also explains the futility and counter-productiveness of government attempts to regulate, control, and equalize all people’s circumstances: “Men are born unequal and … it is precisely their inequality that generates social cooperation and civilization.”

Economics is the youngest of all sciences. In the last two hundred years, it is true, many new sciences have emerged from the disciplines familiar to the ancient Greeks. However, what happened here was merely that parts of knowledge which had already found their place in the complex of the old system of learning now became autonomous. The field of study was more nicely subdivided and treated with new methods; hitherto unnoticed provinces were discovered in it, and people began to see things from aspects different from those of their precursors. The field itself was not expanded. But economics opened to human science a domain previously inaccessible and never thought of. The discovery of a regularity in the sequence and interdependence of market phenomena went beyond the limits of the traditional system of learning. It conveyed knowledge which could be regarded neither as logic, mathematics, psychology, physics, nor biology.

Ludwig von Mises

Ludwig Heinrich Edler von Mises (1881-1973) was the acknowledged leader of the Austrian School of economic thought, a prodigious originator in economic theory, and a prolific author. Mises’ writings and lectures encompassed economic theory, history, epistemology, government, and political philosophy. His contributions to economic theory include important clarifications on the quantity theory of money, the theory of the trade cycle, the integration of monetary theory with economic theory in general, and a demonstration that socialism must fail because it cannot solve the problem of economic calculation. Mises was the first scholar to recognize that economics is part of a larger science in human action, a science which Mises called “praxeology”. He taught at the University of Vienna and later at New York University. Mises wrote many works on two related economic themes: 1. monetary economics, inflation, and the role of government, and 2. the differences between government-controlled economies and free trade. His influential work on economic freedoms, their causes and consequences, brought him to highlight the interrelationships between economic and non-economic freedoms in societies, and the appropriate role for government.