National leader
Adams, John. Letter to John Taylor. 17 Dec. 1814.
Adams, John. “From John Adams to John Taylor, 17 December 1814,” Founders Online, National Archives, https://founders.archives.gov/documents/Adams/99-02-02-6371.
Madison, James [published as Publius]. "Federalist No. 14: Objections to the Proposed Constitution From Extent of Territory Answered." New York Packet, 30 Nov. 1787.
Madison, James. "No. 14: Proposed union not too large for republican government.--Madison." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.
Bush, George W. Press conference. 2 July 2003. Roosevelt Room, The White House, Washington, DC, USA.
Madison, James [published as Publius]. "Federalist No. 10: The Same Subject Continued: The Union as a Safeguard Against Domestic Faction and Insurrection." Daily Advertiser, 22 Nov. 1787.
Madison, James. "No. 10: An extensive republic a remedy for mischiefs of faction.--Madison." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.
Madison, James. Letter to W.T. Barry. 4 Aug. 1822.
Madison, James. "To William T. Barry, August 4, 1822." James Madison: Writings, edited by Jack Rakove. Library of America, 1999.
On the 2017 rally in Charlottesville, Virginia that included white supremacists and counter-demonstrators.
Trump, Donald. Statement about deadly violence in Virginia. 15 Aug. 2017, Trump Tower, New York City, NY, USA. Press conference.
Jefferson, Thomas. Letter to Governor John Langdon. 5 Mar. 1810.
Jefferson, Thomas. "Governor John Langdon, March 5, 1810." The Life and Selected Writings of Thomas Jefferson, edited by Adrienne Koch and William Peden. Modern Library, 1998.
Adams, John. Letter to Thomas Jefferson. 15 July 1813.
John Adams to Thomas Jefferson, 15 July 1813, with Postscript from Abigail Adams to Thomas Jefferson, [ca. 15 July 1813],” Founders Online, National Archives, https://founders.archives.gov/documents/Jefferson/03-06-02-0247.
Clinton, Bill. Comment on 2000 presidential election. 8 Nov. 2000, The White House, Washington, DC, USA.
Jefferson, Thomas. Letter to Colonel Edward Carrington. 16 Jan. 1787.
Jefferson, Thomas. "Col. Edward Carrington, Jan. 16, 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.
Lincoln, Abraham. "Speech in the Illinois Legislature." 11 Jan. 1837, Vandalia, IL, USA.
Lincoln, Abraham. "Speech in the Illinois Legislature January 11, 1837." Abraham Lincoln: Speeches and Writings 1832-1858, edited by Don E. Fehrenbacher. Library of America, 1989.
Obama, Barack. Remarks on New Hampshire primary night. New Hampshire Democratic presidential primary. 8 Jan. 2008, Nashua, NH, USA.
Lincoln, Abraham. "Definition of Democracy." 1 Aug. 1858?
Lincoln, Abraham. "On Slavery and Democracy, 1858?" Abraham Lincoln: Speeches and Writings 1832-1858, edited by Don E. Fehrenbacher. Library of America, 1989.
Eisenhower, Dwight D. Quoted in Six Crises, written by Richard Nixon. Doubleday, 1962.
Reagan, Ronald. Press conference in Chicago. Press conference. 12 Aug. 1986, Hyatt Regency Hotel, Chicago, IL, USA.