The Federalist Papers · Federalist No. 9 · paragraph 4

But it is not to be denied that the portraits they have sketched of republican government were too just copies of the originals from which they were taken. If it had been found impracticable to have devised models of a more perfect structure, the enlightened friends to liberty would have been obliged to abandon the cause of that species of government as indefensible. The science of politics, however, like most other sciences, has received great improvement. The efficacy of various principles is now well understood, which were either not known at all, or imperfectly known to the ancients. The regular distribution of power into distinct departments; the introduction of legislative balances and checks; the institution of courts composed of judges holding their offices during good behavior; the representation of the people in the legislature by deputies of their own election: these are…

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