“Freedom rings where opinions clash.”

2000s, 2004, Speech to United Nations General Assembly (September 2004)

[21 October 2004, http://whedonesque.com/comments/5133, "More X-Men 3 rumors", Whedonesque.com, 2006-12-05]

1960s, I Have A Dream (1963)
Context: This will be the day when all of God's children will be able to sing with a new meaning, "My country, 'tis of thee, sweet land of liberty, of thee I sing. Land where my fathers died, land of the pilgrim's pride, from every mountainside, let freedom ring." And if America is to be a great nation, this must become true. So let freedom ring from the prodigious hilltops of New Hampshire. Let freedom ring from the mighty mountains of New York. Let freedom ring from the heightening Alleghenies of Pennsylvania! Let freedom ring from the snowcapped Rockies of Colorado! Let freedom ring from the curvaceous peaks of California! But not only that; let freedom ring from Stone Mountain of Georgia! Let freedom ring from Lookout Mountain of Tennessee! Let freedom ring from every hill and every molehill of Mississippi. From every mountainside, let freedom ring.

Source: The Wisdom of Tenderness: What Happens When God's Fierce Mercy Transforms Our Lives

January 1965, p. 216
Malcolm X Speaks (1965)

America, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

Section 3 : Work Democracy versus Politics. The Natural Social Forces for the Mastery of the Emotional Plague;
Variant translation: The cry for freedom is a sign of suppression. It will never cease as long as man feels himself to be trapped. No matter how different the cries for freedom may be, at bottom they always express one and the same thing: the intolerableness of the organism's rigidity and the mechanical institutions of life, which are sharply at variance with the natural sensations of life. ... Not until man acknowledges that he is fundamentally an animal, will he be able to create a genuine culture.
The Mass Psychology of Fascism (1933), Ch. 10 : Work Democracy
Context: The cry for freedom is a sign of suppression. It will not cease to ring as long as man feels himself captive. As diverse as the cries for freedom may be, basically they all express one and the same thing: The intolerability of the rigidity of the organism and of the machine-like institutions which create a sharp conflict with the natural feelings for life. Not until there is a social order in which all cries for freedom subside will man have overcome his biological and social crippling, will he have attained genuine freedom. Not until man is willing to recognize his animal nature — in the good sense of the word — will he create genuine culture.

Source: The Quest for Peace, the Cause of Freedom

Regarding the Anglo-Irish Treaty during a parliamentary debate ( Dáil Éireann - Volume T - 19 December, 1921 (DEBATE ON TREATY) http://historical-debates.oireachtas.ie/D/DT/D.T.192112190002.html)
Context: Now as one of the signatories of the document I naturally recommend its acceptance. I do not recommend it for more than it is. Equally I do not recommend it for less than it is. In my opinion it gives us freedom, not the ultimate freedom that all nations desire and develop to, but the freedom to achieve it.