... the fouling of the nest which has been typical of man's activity in the past on a local scale now seems to be extending to the whole world society.
Kenneth E. BouldingIt is clear that the building of models is not a purely mechanical process but requires skill of a high order - not merely mathematical skill but a sensitivity to the relative importance of different factors and a critical, almost an artistic, faculty in the selection of behaviour equations which are reasonable, tentative hypotheses in explaining the behaviour of actual economies.
Kenneth E. Boulding[There will be movement toward] behavioral economics... [which] involves study of those aspects of men's images, or cognitive and affective structures that are more relevant to economic decisions.
Kenneth E. Boulding