“The theorems of economics, say the historicists, are void because they are the product of a priori reasoning. Only historical experience can lead to realistic economics. They fail to see that historical experience is always the experience of complex phenomena, of the joint effects brought about by the operation of a multiplicity of elements. Such historical experience does not give the observer facts in the sense in which the natural sciences apply this term to the results obtained in laboratory experiments. Historical facts need to be interpreted on the ground of previously available theorems. They do not comment upon themselves. The antagonism between economics and historicism does not concern the historical facts. It concerns the interpretation of the facts.”
—Ludwig von Mises. Theory and History: An Interpretation of Social and Economic Evolution
