“All unprejudiced persons objectively surveying the grim events in Bangladesh since March 25 have recognized the revolt of 75 million people, a people who were forced to the conclusion that neither their life, nor their liberty, to say nothing of the possibility of the pursuit of happiness, was available to them.”

Interview with Steve Harvey, quoted in "Clinton confuses Constitution with Declaration of Independence in gun pitch" http://www.foxnews.com/politics/2016/02/25/clinton-confuses-constitution-with-declaration-independence-in-gun-pitch.html, FoxNews.com (25 February 2016)
Presidential campaign (April 12, 2015 – 2016)

Source: Cannibals All!, or Slaves Without Masters (1857), p. 29

Source: Catch-22

Section I, p. 5
Natural Law; or The Science of Justice (1882), Chapter I. The Science of Justice.

1770s, Declaration of Independence (1776)
Context: 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.

His last message, carved onto the walls of his dungeon cell, as quoted in For Faith and Freedom (1997) by Charles A. Howe, p. 109 <!-- Skinner House Books, Boston; also quoted on their web page [LINK now DEAD 2016·03·01] about the Transylvania Unitarian Church (Archive 2007) https://web.archive.org/web/20070717180511/www.emersonhou.org/Transylvania.htm by the Emerson Unitarian Universalist Church, Houston -->
Context: Neither the sword of popes, nor the cross, nor the image of death — nothing will halt the march of truth. I wrote what I felt and that is what I preached with trusting spirit. I am convinced that after my destruction the teachings of false prophets will collapse.

In Richmond, Virginia (April 4, 1865), as quoted in Recollected Words of Abraham Lincoln http://web.archive.org/web/20130517052731/http://mrlincolnandfreedom.org/inside.asp?ID=84&subjectID=3 (1996), by Don Edward Fehrenbacher and Virginia Fehrenbacher, editor, p. 257
1860s, Tour of Richmond (1865)
Context: In reference to you, colored people, let me say God has made you free. Although you have been deprived of your God-given rights by your so-called masters, you are now as free as I am, and if those that claim to be your superiors do not know that you are free, take the sword and bayonet and teach them that you are; for God created all men free, giving to each the same rights of life, liberty, and the pursuit of happiness.

1920s, Equal Rights (1920)
Context: July 4, 1776 was the historic day on which the representatives of three millions of people vocalized Concord, and Lexington, and Bunker Hill, which gave notice to the world that they proposed to establish an independent nation on the theory that all men are created equal, that they are endowed by their creator with certain inalienable rights, that among these are life, liberty, and the pursuit of happiness. The wonder and glory of the American people is not the ringing Declaration of that day, but the action then already begun, and in the process of being carried out, in spite of every obstacle that war could interpose, making the theory of freedom and equality a reality.