Politicians Hear Keynes’s Defunct Voice in the Air

“In one of the most famous passages in The General Theory, Keynes said,
The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air are distilling their frenzy from some academic scribbler of a few years back. (p. 383)
More than eight decades after the appearance of The General Theory, many practical men of affairs and politicians in authority remain the slaves of defunct economists and academic scribblers. The tragedy for our times is that among the voices they still hear in the air as they corruptly mismanage everything they touch is that of John Maynard Keynes”

Austrian Economics & Public Policy, p. 264, Richard Ebeling