“If we want world peace, we must break the vicious circle of violence and reprisal, of an eye for an eye, of endless hate.”

Why We Must Not Reelect President Bush (2004)
Context: We face a vicious circle of escalating violence. President Bush ran on the platform of a "humble" foreign policy in 2000. If we re-elect him now, we endorse the Bush doctrine of preemptive action and the invasion of Iraq, and we will have to live with the consequences.

In a televised speech to the nation on the first anniversary of the parliamentary elections. http://www.dw.com/en/opposition-leader-destabilizing-the-country-bangladesh-pm/a-18171581 (January 05, 2015)

1960s, Freedom From The Known (1969)
Context: We human beings are what we have been for millions of years — colossally greedy, envious, aggressive, jealous, anxious and despairing, with occasional flashes of joy and affection. We are a strange mixture of hate, fear and gentleness; we are both violence and peace.

Nobel Peace Prize Acceptance Speech (2012)
Context: The peace of our world is indivisible. As long as negative forces are getting the better of positive forces anywhere, we are all at risk. It may be questioned whether all negative forces could ever be removed. The simple answer is: “No!” It is in human nature to contain both the positive and the negative. However, it is also within human capability to work to reinforce the positive and to minimize or neutralize the negative. Absolute peace in our world is an unattainable goal. But it is one towards which we must continue to journey, our eyes fixed on it as a traveller in a desert fixes his eyes on the one guiding star that will lead him to salvation. Even if we do not achieve perfect peace on earth, because perfect peace is not of this earth, common endeavours to gain peace will unite individuals and nations in trust and friendship and help to make our human community safer and kinder.

Lessons of Dr. Martin Luther King, Jr. (1990)

The Drowned and the Saved (1986)
Context: In countries and epochs in which communication is impeded, soon all other liberties wither; discussion dies by inanition, ignorance of the opinion of others becomes rampant, imposed opinions triumph. The well-known example of this is the crazy genetics preached in the USSR by Lysenko, which in the absence of discussion (his opponents were exiled to Siberia) compromised the harvests for twenty years. Intolerance is inclined to censor, and censorship promotes ignorance of the arguments of others and thus intolerance itself: a rigid, vicious circle that is hard to break.

"Zombie" (1993); written after the Warrington bomb attack of 20 March 1993 ·  Official video on YouTube https://www.youtube.com/watch?v=6Ejga4kJUts

Source: 1910's, The Art of Noise', 1913, p. 6
Context: This evolution toward noise-sound is only possible today. The ear of an eighteenth century man never could have withstood the discordant intensity of some of the chords produced by our orchestras (whose performers are three times as numerous); on the other hand our ears rejoice in it, for they are attuned to modern life, rich in all sorts of noises. But our ears far from being satisfied, keep asking for bigger acoustic sensations. However, musical sound is too restricted in the variety and the quality of its tones. Music marks time in this small circle and vainly tries to create a new variety of tones... We must break at all cost from this restrictive circle of pure sounds and conquer the infinite variety of noise-sounds.