The only intelligible meaning to be assigned to the phrase ‘the international gold standard’ is the simultaneous presence, in a group of countries, of arrangements by which, in each of them, gold is convertible at a fixed rate into the local currency and the local currency into gold, and by which gold movements from any one of these areas to any of the others are freely permitted by all of them.#Quoted in George Selgin, “The Rise and Fall of the Gold Standard in the United States” (2013)