It will not be denied, that power is of an encroaching nature, and that it ought to be effectually restrained from passing the limits assigned to it.

Madison, James. "No. 51: How to maintain: make the parts check each other. Also, a federal system divides power further.--Madison (or Hamilton)." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.

Jefferson, Thomas. "Col. Smith, Nov. 13, 1787." The Life and Selected Writings of Thomas Jefferson: Including the Autobiography, The Declaration of Independence & His Public and Private Letters, edited by Adrienne Koch and William Peden. Modern Library, 1998.

Adams, John. "Correspondence with Roger Sherman and John Taylor." The Portable John Adams. Penguin Classics, 2004.