The Economic Consequences of the Peace (1919) is a book written and published by John Maynard Keynes. Keynes attended the Paris Peace Conference, 1919 as a delegate of the British Treasury and argued for a much more generous peace. It was a best-seller throughout the world and was critical in establishing a general opinion that the Versailles Treaty was a "Carthaginian peace". It helped to consolidate American public opinion against the treaty and involvement in the League of Nations. The perception by much of the British public that Germany had been treated unfairly in turn was a crucial factor in public support for appeasement. The success of the book established Keynes' reputation as a leading economist especially on the left. When Keynes was a key player in establishing the Bretton Woods system in 1944, he remembered the lessons from Versailles as well as the Great Depression. The Marshall Plan, after the Second World War, was a similar system to that proposed by Keynes in The Economic Consequences of the Peace.
Keynes left Cambridge University to work at the Treasury in 1915. He worked daily on financing the war effort during World War I. That disturbed many of the pacifist members of the Bloomsbury Group of which he was a member. Lytton Strachey sent him a note in 1916 asking Keynes why he was still working at the Treasury.
Keynes quickly established a reputation as one of the Treasury's most able men and travelled to the Versailles Conference as an advisor to the British Government. In preparation for the conference, he argued that there should preferably be no reparations or that German reparations should be limited to £2,000 million. He considered that there should be a general forgiveness of war debts, which, he considered, would benefit Britain. Lastly, Keynes wanted the US government to launch a vast credit program to restore Europe to prosperity as soon as possible.