Lords of Finance by Liaquat Ahamed (pg. 168)

But more than anything else it was Keynes’s ability to strip away the surface of monetary phenomena and reveal some of its deeper realities and its connections to the society at large that has made the Tract such an enduring classic. For example, by tracing through the consequences of rising prices on different classes in a stylized picture of the economy–what economists today might call a model–he showed that inflation was much more than simply prices going up, but also a subtle mechanism for transferring wealth between social groups–from savers, creditors, and wage earners to the government, debtors, and businessmen.