“Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty.”
This is one of seven quotes inscribed on the walls at the gravesite of John F. Kennedy at Arlington National Cemetery.
1961, Inaugural Address
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John F. Kennedy 469
35th president of the United States of America 1917–1963Related quotes

Conditions of Progress in Democratic Government (1909).
Context: No greater mistake can be made than to think that our institutions are fixed or may not be changed for the worse. … Increasing prosperity tends to breed indifference and to corrupt moral soundness. Glaring inequalities in condition create discontent and strain the democratic relation. The vicious are the willing, and the ignorant are unconscious instruments of political artifice. Selfishness and demagoguery take advantage of liberty. The selfish hand constantly seeks to control government, and every increase of governmental power, even to meet just needs, furnishes opportunity for abuse and stimulates the effort to bend it to improper uses... The peril of this Nation is not in any foreign foe! We, the people, are its power, its peril, and its hope!

1980s, First term of office (1981–1985), First Inaugural address (1981)
Context: If we look to the answer as to why for so many years we achieved so much, prospered as no other people on earth, it was because here in this land we unleashed the energy and individual genius of man to a greater extent than has ever been done before. Freedom and the dignity of the individual have been more available and assured here than in any other place on earth. The price for this freedom at times has been high, but we have never been unwilling to pay the price.

Radio adress (January 13, 1953), as quoted in Philip Short (2004) Pol Pot: The History of a Nightmare, page 83.

Draft Constitution for Virginia (June 1776) http://avalon.law.yale.edu/18th_century/jeffcons.asp
1770s
Source: The Phoenix and the Mirror (1969), Chapter 10

Speech delivered at the officers' club (June 16, 1959).
Principles of the 14th July Revolution (1959)