Somewhere, Edward Gibbon is making notes

JEFFERSON (1776): We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. --That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.

LINCOLN (1863): It is rather for us to be here dedicated to the great task remaining before us -- that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion -- that we here highly resolve that these dead shall not have died in vain -- that this nation, under God, shall have a new birth of freedom -- and that government of the people, by the people, for the people shall not perish from the earth.

FDR (1933): The only thing we have to fear is fear itself.

JFK (1961): Ask not what your country can do for you, ask what you can do for your country.

REAGAN (1981): In this present crisis, government is not the solution to our problem; government is the problem.

REAGAN (1987): Mr. Gorbachev, tear down this wall.

CLINTON (1998): I did not have sexual relations with that woman.

OBAMA (2014): I don’t want to put the cart before the horse. We don’t have a strategy yet.