"Ambition must be made to counteract ambition. The interest of the man must be connected with the constitutional rights of the place. It may be a reflection on human nature that such devices should be necessary to control the abuses of government. What is government itself but the greatest of all reflections on human nature?"

-- James Madison, Federalist No. 51, 1788

 
 
_"History by apprising [citizens] of the past will enable them to judge of the future; it will avail them of the experience of other times and other nations; it will qualify them as judges of the actions and designs of men; it will enable them to know ambition under every disguise it may assume; and knowing it, to defeat its views."

--Thomas Jefferson, Notes on the State of Virginia