“The services money renders are conditioned by the height of its purchasing power. Nobody wants to have in his cash holding a definite number of pieces of money or a definite weight of money; he wants to keep a cash holding of a definite amount of purchasing power.”
Ludwig von Mises, Human Action, 3rd rev. ed. (Chicago: Contemporary Books, 1966) p 421.

Read Gary North’s The Official Counterfeiter.

Frank Shostak explains global liquidity and whether there is such a thing: The Yen and Monetary Liquidity