... the causes of the wealth and poverty of nations—the grand object
of all enquiries in Political Economy.
—Malthus to Ricardo, letter of 26 January 1817*
- J. M. Keynes, Collected Works, X, 97-98, quoted in Skidelsky, John Maynard Keynes:
The Economist as Saviour 1920-1937, p. 419. My thanks for this quotation to Morton
Keller.