Historical account of how the idea of monetary rules developed in the course of the nineteenth and twentieth centuries, starting with Bullionist debates, Banking School Currency School debate, and
deliberations over the reconstruction of an international monetary system after World War I. From these debates, I consider how the rules versus discretion dichotomy was used by Henry Simons and Milton Friedman to apply the Currency School proposal of a 100% marginal reserve requirement on banknotes issued by the Bank of England into a proposal for 100% reserve banking by Simons and subseqently the k-percent rule by Friedman. ... [more]