The Case for Liberty

Economic science, in short, establishes existential laws, of the type: if A, then B. Mises demonstrates that this science asserts that laissez-faire policy leads to peace and higher standards of living for all, while statism leads to conflict and lower living standards. Then, Mises as a citizen chooses laissez-faire liberalism because he is interested in achieving these ends. The only sense in which Mises considers liberalism as “scientific” is to the extent that people unite on the goal of abundance and mutual benefit. Perhaps Mises is overly sanguine in judging the extent of such unity, but he never links the valuational and the scientific: when he says that a price control is “bad” he means bad not from his point of view as an economist, but from the point of view of those in society who desire abundance. Those who choose contrasting goals--who favor price controls, for example, as a route to bureaucratic power over their fellow men, or who, through envy, judge social equality as more worthwhile than general abundance or liberty--would certainly not accept liberalism, and Mises would certainly never say that economic science proves them wrong. He never goes beyond saying that economics furnishes men with the knowledge of the consequences of various political actions; and that it is the citizen’s province, knowing these consequences, to choose his political course.

From Rothbard's In Defense of "Extreme Apriorism". Beautiful!