“Modern macroeconomics flourished in its pursuit of the secrets of long-run economic growth, but it neglected short-run economic problems. In the long run, prices are flexible, and the growth of the economy is determined by the growth in the ability to supply goods and services. But in the short run prices are not flexible. Growth can be held back because prices are too high and, as a result, demand is too low. Keynes made his name by analyzing short-run problems caused by the stickiness or even rigidity of some important prices. But these Keynesian ideas were abandoned by modern macroeconomics.”
Why Keynes is Important Today (2014)
Help us to complete the source, original and additional information
Peter Temin 3
American economist 1937Related quotes

1962, Address and Question and Answer Period at the Economic Club of New York (549)
Source: The Inefficient Stock Market - What Pays Off And Why (1999), Chapter 15, The Wrong 20-yard Line, p. 142

Quoted and attributed to Graham in Warren Buffett's 1993 letter to investors. https://www.berkshirehathaway.com/letters/1993.html
The statement is not found in any of Graham's publications or lecture transcripts, and when asked, Buffett could not provide a reference. https://www.bogleheads.org/forum/viewtopic.php?t=77840
Disputed

Source: The Limits To Capital (2006 VERSO Edition), Chapter 13, Crisis In The Space Economy Of Capitalism, p. 442

“Real economic growth emanates from increased productivity, which tends to hold prices down.”
Quotes from Crash Proof (2006)

Simon Kuznets in: Herbert David Croly eds. (1962) The New Republic Vol. 147. p. 29: About rethinking the system of national accounting
Gardiner C. Means, "Price inflexibility and the requirements of a stabilizing monetary policy." Journal of the American Statistical Association 30.190 (1935): 401-413.