“My personal indignation cannot be compared with the magnitude of my concern for the sad fate of our country! These traitors have thrown the country - which had a good reputation as an island of peace - into the furnace of the American's war! The freedom and solidarity of the nation have been completely destroyed. Millions of our fellow countrymen will rise up to liquidate the reactionary group of Lon Nol and Sirik Matak and their American masters!… I call on all my children, both military and civilian, who cannot stand to remain under the traitor's power, and who are courageous and determined to liberate the fatherland, to fight our enemy. If the children already have weapons, I will bring the ammunition and even new weapons to strengthen them. If the children have no weapons and want to undergo training, I will take measures to help them leave for the military school, deep in the jungle to avoid enemy detection. For those children who are in Europe and wish to serve, come to Moscow or Peking to see me. Long live Cambodia!”

Said during his exile in Peking, as quoted by Oriana Fallaci (June 1973), Intervista con la Storia (sixth edition, 2011). pages 112-113.
Interviews

Speech at the Chamber of Commerce, New York City, New York (2 January 1896)
Context: What is the rule of honor to be observed by a power so strongly and so advantageously situated as this Republic is? Of course I do not expect it meekly to pocket real insults if they should be offered to it. But, surely, it should not, as our boyish jingoes wish it to do, swagger about among the nations of the world, with a chip on its shoulder, shaking its fist in everybody's face. Of course, it should not tamely submit to real encroachments upon its rights. But, surely, it should not, whenever its own notions of right or interest collide with the notions of others, fall into hysterics and act as if it really feared for its own security and its very independence.
As a true gentleman, conscious of his strength and his dignity, it should be slow to take offense. In its dealings with other nations it should have scrupulous regard, not only for their rights, but also for their self-respect. With all its latent resources for war, it should be the great peace power of the world. It should never forget what a proud privilege and what an inestimable blessing it is not to need and not to have big armies or navies to support. It should seek to influence mankind, not by heavy artillery, but by good example and wise counsel. It should see its highest glory, not in battles won, but in wars prevented. It should be so invariably just and fair, so trustworthy, so good tempered, so conciliatory, that other nations would instinctively turn to it as their mutual friend and the natural adjuster of their differences, thus making it the greatest preserver of the world's peace.
This is not a mere idealistic fancy. It is the natural position of this great republic among the nations of the earth. It is its noblest vocation, and it will be a glorious day for the United States when the good sense and the self-respect of the American people see in this their "manifest destiny." It all rests upon peace. Is not this peace with honor? There has, of late, been much loose speech about "Americanism." Is not this good Americanism? It is surely today the Americanism of those who love their country most. And I fervently hope that it will be and ever remain the Americanism of our children and our children's children.

A short time later, debris was seen falling from the skies above Texas. The Columbia is lost; there are no survivors.
2000s, 2003, Remarks after Columbia space shuttle disaster (February 2003)

2015, Speech: Declaration as Vice Presidential Candidate

Speech to the NAACP http://www.virginia.edu/uvanewsmakers/newsmakers/gardner.html (29 June 1947).

1961, Inaugural Address
Context: In your hands, my fellow citizens, more than in mine, will rest the final success or failure of our course. Since this country was founded, each generation of Americans has been summoned to give testimony to its national loyalty. The graves of young Americans who answered the call to service surround the globe.

1920s, Address at the Black Hills (1927)

2000s, 2004, Speech at the Republican National Convention (2004)

Source: Between the World and Me (2015), p. 8.