G. Edward Griffin quote: “To oppose corruption in government is the highest obligation of patriotism.”

“Dissent is the highest form of patriotism.”

Thomas Jefferson (1743–1826) 3rd President of the United States of America

Various; earliest source The Use of Force in International Affairs http://www.worldcat.org/oclc/21414360 (Philadelphia: Friends Peace Committee, 1961), 6, and popularized by various users in the 1960s:
If what your country is doing seems to you practically and morally wrong, is dissent the highest form of patriotism?
Dissent is the highest form of patriotism http://wiki.monticello.org/mediawiki/index.php/Dissent_is_the_highest_form_of_patriotism_(Quotation), Thomas Jefferson Encyclopedia
Other form by historian Howard Zinn Dissent In Pursuit Of Equality, Life, Liberty And Happiness: An Interview With Historian Howard Zinn http://www.tompaine.com/Archive/scontent/5908.html by Sharon Basco, TomPaine.com http://TomPaine.com, July 03 2002 (The quote can be found in the first sentence of Mr. Zinn's first answer; nowhere in that article does Howard Zinn attribute that quote to Jefferson.):
While some people think that dissent is unpatriotic, I would argue that dissent is the highest form of patriotism.
Law professor Jim Lindgren of The Volokh Conspiracy has traced the possible origin of this saying back as far as the 11 November 1984 obituary of pacifist activist Dorothy Hewitt Hutchinson in the Philadelphia Inquirer, quoting a 1965 interview. The direct quote there is: "Dissent from public policy can be the highest form of patriotism," she said in an interview in 1965. "I don't think democracy can survive without it, even though you may be crucified by it at times." According to the professor's research http://volokh.com/posts/1146554363.shtml, the misattribution was popularized in the 1990's by ACLU president Nadine Strossen. Bill Mullins of the American Dialect Society did further research http://listserv.linguistlist.org/cgi-bin/wa?A2=ind0605A&L=ADS-L&P=R1297&I=-3.
Misattributed

“Governments have an obligation to preserve their populations’ cultures as world heritage in accordance with the aim of the United Nations Educational, Scientific and Cultural Organization to promote diversity and oppose cultural imperialism.”

Alfred de Zayas (1947) American United Nations official

Report of the Independent Expert on the promotion and protection of all human rights, civil, political, economic, social and cultural rights, including the right to development https://documents-dds-ny.un.org/doc/UNDOC/GEN/G16/151/19/PDF/G1615119.pdf?OpenElement.
2016, Report submitted to the UN Human Rights Council

“If ever the Time should come, when vain & aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin.”

Samuel Adams (1722–1803) American statesman, Massachusetts governor, and political philosopher

Letter to James Warren (24 October 1780) http://www.gutenberg.org/etext/2094

“The highest obligation of a soldier is not to die in war but to live through it.”

Suraj Sani (1996) Nigerian writer, Spoken word artist

P. 127. https://www.goodreads.com/quotes/10937449-the-highest-obligation-of-a-soldier-is-not-to-die

“To the corruptions of Christianity I am indeed opposed; but not to the genuine precepts of Jesus himself.”

Thomas Jefferson (1743–1826) 3rd President of the United States of America

Letter to Benjamin Rush (12 April 1803) http://www.positiveatheism.org/hist/jeff1122.htm
1800s, First Presidential Administration (1801–1805)
Context: To the corruptions of Christianity I am indeed opposed; but not to the genuine precepts of Jesus himself. I am a Christian, in the only sense he wished any one to be; sincerely attached to his doctrines, in preference to all others; ascribing to himself every human excellence; & believing he never claimed any other.

“He should refuse to be swayed by frenzied passion or surface patriotism, but should remember that the truest patriotism is shown only by loyalty to one's highest moral convictions.”

Kirby Page (1890–1957) American clergyman

Source: The Sword or the Cross, Which Should be the Weapon of the Christian Militant? (1921), Ch.6 p. 107
Context: The Christian militant is challenged to follow his convictions and to refuse all compromise with means and weapons that are unchristian. If he believes firmly that war is always an unchristian way of seeking to achieve a righteous end, he should be loyal to that conviction in the face of any pressure or danger, and be no less courageous than the soldier in battle. He should be loyal to his conviction even in the face of aroused public opinion and popular clamor. He should refuse to be swayed by frenzied passion or surface patriotism, but should remember that the truest patriotism is shown only by loyalty to one's highest moral convictions.

“The formation of such feelings of obligation and loyalty to any group with which one is identified is of the highest significance to good morale. It is the essence of the powerful patriotic feelings which are stimulated in times of war, but which have their origins in earliest childhood. …Not all Americans have been able to develop a range of identification large enough to include the nation and thus to develop strong feelings of loyalty and obligation. To some extent this ability seems to be a measure of social maturity.”

Roy R. Grinker, Sr. (1900–1993) American psychiatrist and neurologist

Source: Men Under Stress, 1945, p. 40 cited in: The Clare Spark Blog (2009) Strategic Regression in “the greatest generation” http://clarespark.com/2009/12/09/strategic-regression-in-the-greatest-generation/ December 9, 2009