In his memoirs, Pierre Uri, former Economic and Financial Adviser to Jean Monnet at the French National Planning Board in Paris and subsequently Director at the High Authority of the European Coal and Steel Community (ECSC), recalls the challenges that had to be overcome during the drafting of the Spaak Report, which formed the basis of the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom).