May have blogged this quote before, but it certainly bears repeating.
"the whole of economics can be reduced to a single lesson, and that lesson can be reduced to a single sentence. The art of economics consists in looking not merely at the immediate but at the longer effects of any act or policy; it consists in tracing the consequences of that policy not merely for one group but for all groups."
Economics in One Lesson « World is Green
Martial Law vs. Market Law: Reflections on Boston
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