I am myself persuaded, on the basis of extensive study of the historical evidence, that... the severity of each of the contractions - 1920-21, 1929-33, and 1937-38 - is directly attributable to acts of commission and omission by the Reserve authorities and would not have occurred under earlier monetary and banking arrangements.
Milton FriedmanWhat central banks can control is a base and one way they can control the base is via manipulating a particular interest rate, such as a Federal Funds rate, the overnight rate at which banks lend to one another. But they use that control to control what happens to the quantity of money. There is no disagreement.
Milton Friedman