The Federalist Papers · Federalist No. 21 · paragraph 8

The wealth of nations depends upon an infinite variety of causes. Situation, soil, climate, the nature of the productions, the nature of the government, the genius of the citizens, the degree of information they possess, the state of commerce, of arts, of industry, these circumstances and many more, too complex, minute, or adventitious to admit of a particular specification, occasion differences hardly conceivable in the relative opulence and riches of different countries. The consequence clearly is that there can be no common measure of national wealth, and, of course, no general or stationary rule by which the ability of a state to pay taxes can be determined. The attempt, therefore, to regulate the contributions of the members of a confederacy by any such rule, cannot fail to be productive of glaring inequality and extreme oppression.

Publius · Alexander Hamilton, John Jay, James Madison · 1787–1788
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