"But public works, economic protectionism, cheap money, "deficit-financed government spending," and "the animal spirits of the spendthrift in the service of boosting "consumption demand"... Doesn't Keynesianism simply appeal to the worst in human nature?"

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Investment bubbles and high animal spirits do not materialize out of thin air. They need extremely favorable economic fundamentals together with free and easy, cheap credit, and they need it for at least two or three years. Importantly, they also need serial pleasant surprises in such critical variables as global GNP growth.

— Jeremy Grantham