John Maynard Keynes: When my information changes, I alter my conclusions. What do you do, sir?

Source

From the book Reply to a criticism during the Great Depression of having changed his position on monetary policy, as quoted in "The Ke, John Maynard Keynes, Reply to a criticism during the Great Depression of having changed his position on monetary policy, as quoted in "The Keynes Centenary" by Paul Samuelson, in The Economist Vol. 287 (1983), p. 19; later in The Collected Scientific Papers of Paul Samuelson, Volume 5 (1986), p. 275