It is important, likewise, that the habits of thinking in a free country should inspire caution in those intrusted with its administration to confine themselves within their respective constitutional spheres, avoiding in the exercise of the powers of one department to encroach upon another. The spirit of encroachment tends to consolidate the powers of all the departments in one, and thus to create, whatever the form of government, a real despotism. A just estimate of that love of power and proneness to abuse it which predominates in the human heart is sufficient to satisfy us of the truth of this position.

George Washington (1732-1799) American military leader, Founding Father, US President (1789-1797)
Essay (1796-09-18), “Farewell Address,” Claypoole’s American Daily Advertiser, Philadelphia
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The original draft of "The Address of Gen. Washington to the People of America on His Declining the Presidency of the United States" was by James Madison in June 1792. At the end of his second term, Washington, with the help of Alexander Hamilton, revised it for release and publication.