Best known as a monetary economist and prominent proponent of monetarism, Karl Brunner was deeply knowledgeable about the philosophy of science and attempted to explicitly integrate logical empiricist thinking, derived in some measure from his engagement with the work of the philosopher Hans Reichenbach, into his economics.  His philosophical commitments are clearly reflected in this empirical work on monetary economics, his monetarist analysis, and in his critical approach to econometrics, microfoundations, and the New Classical macroeconomics.