“For in reason, all government without the consent of the governed is the very definition of slavery.”

1850s, Speech at Peoria, Illinois (1854)
Context: Judge Douglas frequently, with bitter irony and sarcasm, paraphrases our argument by saying: "The white people of Nebraska are good enough to govern themselves, but they are not good enough to govern a few miserable negroes!"
Well! I doubt not that the people of Nebraska are and will continue to be as good as the average of people elsewhere. I do not say the contrary. What I do say is that no man is good enough to govern another man without that other's consent. I say this is the leading principle, the sheet-anchor of American republicanism. Our Declaration of Independence says: "We hold these truths to be self-evident: 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. That to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed."
I have quoted so much at this time merely to show that, according to our ancient faith, the just powers of governments are derived from the consent of the governed. Now the relation of master and slave is pro tanto a total violation of this principle. The master not only governs the slave without his consent, but he governs him by a set of rules altogether different from those which he prescribes for himself. Allow ALL the governed an equal voice in the government, and that, and that only, is self-government.

Introduction to his book The House of Lords in the Middle Ages (Weidenfeld & Nicolson, 1968), p. xi
1960s

319 U.S. 641
Judicial opinions, West Virginia State Board of Education v. Barnette (1943)
Context: We set up government by consent of the governed, and the Bill of Rights denies those in power any legal opportunity to coerce that consent. Authority here is to be controlled by public opinion, not public opinion by authority.

Source: The Republic of Thieves

Interview with Glenn Greenwald, 6 June 2013, Part 1

Remarks to American Field Service Students http://www.eisenhower.archives.gov/education/bsa/citizenship_merit_badge/speeches/address_convention_hall.pdf (15 July 1958) <br class="br">1950s

1920s, Speech on the Anniversary of the Declaration of Independence (1926)
Context: If all men are created equal, that is final. If they are endowed with inalienable rights, that is final. If governments derive their just powers from the consent of the governed, that is final. No advance, no progress can be made beyond these propositions. If anyone wishes to deny their truth or their soundness, the only direction in which he can proceed historically is not forward, but backward toward the time when there was no equality, no rights of the individual, no rule of the people. Those who wish to proceed in that direction can not lay claim to progress. They are reactionary. Their ideas are not more modern, but more ancient, than those of the Revolutionary fathers.