Any person who does any unauthorized act in relation to this publication may be liable to criminal prosecution and civil claims for damages. So, too, our problem is not a human problem of muscles and endurance. It is not an engineering problem or an agricultural problem. It is not even a business problem, if we mean by business those calculations and dispositions and organising acts by which individual entrepreneurs can better themselves. Nor is it a banking problem, if we mean by banking those principles and methods of shrewd judgement by which lasting connections are fostered and unfortunate commitments avoided. On the contrary, it is, in the strictest sense, an economic problem or, to express it better, as suggesting a blend of economic theory with the art of statesmanship, a problem of political economy.