PRAXEOLOGY ANDECONOMIC SCIENCEIt is well-known that <strong>Austrian</strong>s disagree strongly witho<strong>the</strong>r schools of economic thought, such as <strong>the</strong>Keynesians, <strong>the</strong> Monetarists, <strong>the</strong> Public Choicers, Historicists,Institutionalists, <strong>and</strong> Marxists. 1 Disagreement ismost conspicuous, of course, when it comes to economicpolicy <strong>and</strong> economic policy proposals. At times <strong>the</strong>re alsoexists an alliance between <strong>Austrian</strong>s <strong>and</strong>, in particular, Chicagoites<strong>and</strong> Public Choicers. Ludwig von Mises, Murray N.Rothbard, Milton Friedman, <strong>and</strong> James Buchanan, to cite afew names, are often united in <strong>the</strong>ir efforts to defend <strong>the</strong> freemarket economy against its "liberal" <strong>and</strong> socialist detractors.None<strong>the</strong>less, as important as such occasional agreementsmay be for tactical or strategic reasons, <strong>the</strong>y can only besuperficial, for <strong>the</strong>y cover up some truly fundamental differencesbetween <strong>the</strong> <strong>Austrian</strong> school, as represented by Mises<strong>and</strong> Rothbard, <strong>and</strong> all <strong>the</strong> rest. The ultimate difference fromwhich all disagreements at <strong>the</strong> levels of economic <strong>the</strong>ory<strong>and</strong> economic policy stem-disagreements, for instance,IThe first two essays are based on two lectures delivered at <strong>the</strong> Ludwig vonMises Institute's '~dvanced Instructional Conference on <strong>Austrian</strong> <strong>Economic</strong>s,"June 21-27, 1987. The third essay is reprinted from The <strong>Economic</strong>s <strong>and</strong> Ethics ofPrivate Property (Kluwer Academic Publishers in 1993), pp. 141-64.The Ludwig von Mises Institute • 7
<strong>Economic</strong> <strong>Science</strong> <strong>and</strong> <strong>the</strong> <strong>Austrian</strong> <strong>Method</strong>as regards <strong>the</strong> merit of <strong>the</strong> gold st<strong>and</strong>ard vs. fiat mone~free-banking vs. central banking, <strong>the</strong> welfare implications ofmarkets vs. state-action, capitalism vs. socialism, <strong>the</strong> <strong>the</strong>oryofinterest <strong>and</strong> <strong>the</strong> business cycle, etc.-concerns <strong>the</strong> answerto <strong>the</strong> very first question that any economist must raise:What is <strong>the</strong> subject matter ofeconomics, <strong>and</strong> what kind ofpropositions are economic <strong>the</strong>orems?Mises's answer is that economics is <strong>the</strong> science ofhumanaction. In itself, this may not sound very controversial. But<strong>the</strong>n Mises says of <strong>the</strong> science of economics:Its statements <strong>and</strong> propositions are not derived from experience.They are, like those of logic <strong>and</strong> ma<strong>the</strong>matics, apriori. They are not subject to verification <strong>and</strong> falsificationon <strong>the</strong> ground of experience <strong>and</strong> facts. They are bothlogically <strong>and</strong> temporally antecedent to any comprehensionof historical facts. They are a necessary requirement of anyintellectual grasp of historical events. 2In order to emphasize <strong>the</strong> status ofeconomics as a purescience, a science that has 11-10re in common with a disciplinelike applied logic than, for instance, with <strong>the</strong> empiricalnatural sciences, Mises proposes <strong>the</strong> term "praxeology" (<strong>the</strong>logic ofaction) for <strong>the</strong> branch ofknowledge exemplified byeconomics. 3It is this assessment ofeconomics as an a priori science,a science whose propositions can be given a rigorous logicaljustification, which distinguishes <strong>Austrian</strong>s, or more2Ludwig von Mises, Human Action (Chicago: Henry Regnery, 1966), p. 32.3Mises's methodological work is contained mainly in his EpistemologicalProblems of<strong>Economic</strong>s (New York: New York University Press, 1981); Theory <strong>and</strong>History (Washington, D.C.: Ludwig von Mises Institute, 1985); The UltimateFoundation of<strong>Economic</strong> <strong>Science</strong> (Kansas City, Kans.: Sheed Andrews <strong>and</strong> McMeel,1978); Human Action, part I.8 • The Ludwig von Mises Institute