“We must all understand that only manly discipline—unconditional subordination to selfless leaders guided only by their public spirit, relegation of our own thoughts, and confidence in the Führer—can guarantee that the moral force of the individual shall be aggregated into a power that will effect the re-building of the nation and the Fatherland.”

2009, Nobel Prize acceptance speech (December 2009)
Context: In today's wars, many more civilians are killed than soldiers; the seeds of future conflict are sown, economies are wrecked, civil societies torn asunder, refugees amassed, children scarred.
I do not bring with me today a definitive solution to the problems of war. What I do know is that meeting these challenges will require the same vision, hard work, and persistence of those men and women who acted so boldly decades ago. And it will require us to think in new ways about the notions of just war and the imperatives of a just peace.
We must begin by acknowledging the hard truth: We will not eradicate violent conflict in our lifetimes. There will be times when nations — acting individually or in concert — will find the use of force not only necessary but morally justified.
I make this statement mindful of what Martin Luther King Jr. said in this same ceremony years ago: "Violence never brings permanent peace. It solves no social problem: it merely creates new and more complicated ones." As someone who stands here as a direct consequence of Dr. King's life work, I am living testimony to the moral force of non-violence. I know there's nothing weak — nothing passive — nothing naïve — in the creed and lives of Gandhi and King.
But as a head of state sworn to protect and defend my nation, I cannot be guided by their examples alone. I face the world as it is, and cannot stand idle in the face of threats to the American people. For make no mistake: Evil does exist in the world. A non-violent movement could not have halted Hitler's armies. Negotiations cannot convince al Qaeda's leaders to lay down their arms. To say that force may sometimes be necessary is not a call to cynicism — it is a recognition of history; the imperfections of man and the limits of reason.

1900s, The Moral Equivalent of War (1906)
Context: Such a conscription, with the state of public opinion that would have required it, and the many moral fruits it would bear, would preserve in the midst of a pacific civilization the manly virtues which the military party is so afraid of seeing disappear in peace. We should get toughness without callousness, authority with as little criminal cruelty as possible, and painful work done cheerily because the duty is temporary, and threatens not, as now, to degrade the whole remainder of one's life. I spoke of the "moral equivalent" of war. So far, war has been the only force that can discipline a whole community, and until and equivalent discipline is organized, I believe that war must have its way. But I have no serious doubt that the ordinary prides and shames of social man, once developed to a certain intensity, are capable of organizing such a moral equivalent as I have sketched, or some other just as effective for preserving manliness of type. It is but a question of time, of skilful propogandism, and of opinion-making men seizing historic opportunities.

Source: The Right to Struggle (1993), P. 63.

Address to his household, Yverdon, Switzerland, on his seventy-second birthday (1818-01-12)

1910s, Address to the Knights of Columbus (1915)
Context: All of us, no matter from what land our parents came, no matter in what way we may severally worship our Creator, must stand shoulder to shoulder in a united America for the elimination of race and religious prejudice. We must stand for a reign of equal justice to both big and small. We must insist on the maintenance of the American standard of living. We must stand for an adequate national control which shall secure a better training of our young men in time of peace, both for the work of peace and for the work of war. We must direct every national resource, material and spiritual, to the task not of shirking difficulties, but of training our people to overcome difficulties. Our aim must be, not to make life easy and soft, not to soften soul and body, but to fit us in virile fashion to do a great work for all mankind. This great work can only be done by a mighty democracy, with these qualities of soul, guided by those qualities of mind, which will both make it refuse to do injustice to any other nation, and also enable it to hold its own against aggression by any other nation. In our relations with the outside world, we must abhor wrongdoing, and disdain to commit it, and we must no less disdain the baseness of spirit which lamely submits to wrongdoing. Finally and most important of all, we must strive for the establishment within our own borders of that stern and lofty standard of personal and public neutrality which shall guarantee to each man his rights, and which shall insist in return upon the full performance by each man of his duties both to his neighbor and to the great nation whose flag must symbolize in the future as it has symbolized in the past the highest hopes of all mankind.

Variant: To effectively communicate, we must realize that we are all different in the way we perceive the world and use this understanding as a guide to our communication with others.
Source: Unlimited Power (1986), p. 237

Source: Speech http://hansard.millbanksystems.com/commons/1871/aug/08/third-reading in the House of Commons (8 August 1871).

In Quest of Democracy (1991)

The Hindu Reporter in: Governor, CM condole Jatti's death http://www.thehindu.com/2002/06/08/stories/2002060804340400.htm, The Hindu, 8 June 2002.