“A pre-emptive war in 'defense' of freedom would surely destroy freedom, because one simply cannot engage in barbarous action without becoming a barbarian, because one cannot defend human values by calculated and unprovoked violence without doing mortal damage to the values one is trying to defend.”

1980s, First term of office (1981–1985), Abortion and the Conscience of the Nation (1983)

Source: "Die Menschen können nicht ohne Hoffnung leben" (one of his last interviews), Rhein-Neckar-Zeitung (February 11, 2002)

Essay, written under the pseudonym "Candidus," in The Boston Gazette (14 October 1771) http://www.gutenberg.org/etext/2092, later published in The Life and Public Services of Samuel Adams (1865) by William Vincent Wells, p. 425

2000-09, Ai Weiwei, Nursing Head Wound, Sharpens Criticism, 2009
Variant: Without freedom of speech, there is no modern world, just a barbaric one.

The reference to Cassius is that of the character in William Shakespeare's play Julius Caesar. Listen to an mp3 sound file http://www.otr.com/murrow_mccarthy.shtml of parts of this statement.
See It Now (1954)
Context: No one familiar with the history of this country can deny that congressional committees are useful. It is necessary to investigate before legislating, but the line between investigating and persecuting is a very fine one and the junior Senator from Wisconsin has stepped over it repeatedly. His primary achievement has been in confusing the public mind as between the internal and the external threats of communism. We must not confuse dissent with disloyalty. We must remember always that accusation is not proof and that conviction depends upon evidence and due process of law. We will not walk in fear, one of another. We will not be driven by fear into an age of unreason, if we dig deep in our history and our doctrine, and remember that we are not descended from fearful men — not from men who feared to write, to speak, to associate and to defend causes that were, for the moment, unpopular. This is no time for men who oppose Senator McCarthy's methods to keep silent, or for those who approve. We can deny our heritage and our history, but we cannot escape responsibility for the result. There is no way for a citizen of a republic to abdicate his responsibilities. As a nation we have come into our full inheritance at a tender age. We proclaim ourselves, as indeed we are, the defenders of freedom, wherever it continues to exist in the world, but we cannot defend freedom abroad by deserting it at home. The actions of the junior Senator from Wisconsin have caused alarm and dismay amongst our allies abroad, and given considerable comfort to our enemies. And whose fault is that? Not really his. He didn't create this situation of fear; he merely exploited it — and rather successfully. Cassius was right. "The fault, dear Brutus, is not in our stars, but in ourselves." Good night, and good luck.

The Islamic veil

From interview with Robert Block, 1995
Interviews (1993 – 1995)

This Business of Living (1935-1950)