[The historical] development in the international system may almost be defined as the process by which we pass from stable war to stable peace.
Kenneth E. BouldingEconomists and technologists bring the "bits", but it requires the social scientists and humanists to bring the "wits.
Kenneth E. Boulding[The integrative system] deals with such matters as respect, legitimacy, community, friendship, affection, love, and of course their opposites, across a broad scale of human relationships and interactions.
Kenneth E. BouldingOne of the most important skills of the economist, therefore, is that of simplification of the model. Two important methods of simplification have been developed by economists. One is the method of partial equilibrium analysis (or microeconomics), generally associated with the name of Alfred Marshall and the other is the method of aggregation (or macro-economics), associated with the name of John Maynard Keynes.
Kenneth E. Boulding