“The acceptance of the legitimacy of the overt use of power comes hard in some segments of our citizenship. In some of the expressions of concern over our behavior in Vietnam, we are seeing curious aspects of our national character in this regard. They often contain a note of reluctance or of regret over the use of the vast power represented by the resources of the United States at home and abroad. In some quarters there seems to even be what amounts to a certain feeling of guilt arising from our possession of this power and an uneasiness about the morality of our conduct. One consequence of this attitude in the Vietnam situation is that our government must constantly defend its actions to critics and, in so doing, is often obliged to disclose its plans and purposes to a degree which must be vastly helpful to our opponents. Inevitably in a situation such as Vietnam, where we are using limited means to gain limited ends, it is essential to keep the adversary in doubt with regard to the full scope of our intentions.”

From Her Books, I Have Chosen To Stay And Fight, ACTIVISM

Source: How to Stop Worrying and Start Living (1948), p. 110

Source: Swords and Plowshares (1972), p. 408

Address to the Annual Stockholders Sperry Rand Corporation (30 July 1957), as published in General MacArthur Speeches and Reports 1908-1964 (2000) by Edward T. Imparato, p. 206

As with the shorn hair, that signified his manhood’s honor, the strength of Samson disappeared, so the strength of our party would cease if we allowed the bourgeois Delilahs to flatter away our most precious jewel and the roots of our triumphal strength – the party purity, the party honor.
No Compromise – No Political Trading (1899)

Source: Faith vs. Fact (2015), p. 171

Quotes 1990s, 1990–1994, Manufacturing Consent: Noam Chomsky and the Media, 1992

Letter to http://memory.loc.gov/cgi-bin/query/r?ammem/mtj:@field(DOCID+@lit(tj110158)) Thomas Leiper (12 June 1815). Published in The Works of Thomas Jefferson in Twelve Volumes http://oll.libertyfund.org/ToC/0054.php, Federal Edition, Paul Leicester Ford, ed., New York: G. P. Putnam's Sons, 1904, Vol. 11 http://oll.libertyfund.org/Texts/Jefferson0136/Works/0054-11_Bk.pdf, pp. 477–478.
The sentence "I hope our wisdom will grow with our power, and teach us, that the less we use our power, the greater it will be." was used by US-President Barack Obama in his A New Beginning Speech.
1810s
Context: We concur in considering the government of England as totally without morality, insolent beyond bearing, inflated with vanity and ambition, aiming at the exclusive dominion of the sea, lost in corruption, of deep-rooted hatred towards us, hostile to liberty wherever it endeavors to show its head, and the eternal disturber of the peace of the world. In our estimate of Bonaparte, I suspect we differ. [... ] Our form of government is odious to him, as a standing contrast between republican and despotic rule; and as much from that hatred, as from ignorance in political economy, he had excluded intercourse between us and his people, by prohibiting the only articles they wanted from us, that is, cotton and tobacco. Whether the war we have had with England, and the achievements of that war, and the hope that we may become his instruments and partisans against that enemy, may induce him, in future, to tolerate our commercial intercourse with his people, is still to be seen. For my part, I wish that all nations may recover and retain their independence; that those which are overgrown may not advance beyond safe measures of power, that a salutary balance may be ever maintained among nations, and that our peace, commerce, and friendship, may be sought and cultivated by all. It is our business to manufacture for ourselves whatever we can, to keep our markets open for what we can spare or want; and the less we have to do with the amities or enmities of Europe, the better. Not in our day, but at no distant one, we may shake a rod over the heads of all, which may make the stoutest of them tremble. But I hope our wisdom will grow with our power, and teach us, that the less we use our power, the greater it will be.

Source: The Power of Your Subconscious Mind