“As long as we are ruled by others we shall lay our mistakes at their door, and our sense of responsibility will remain dulled. Freedom brings responsibilities, and our experience can be enriched only by the acceptance of these responsibilities.”

The Diary of Anaïs Nin, Vol. 5, as quoted in Moving to Antarctica : An Anthology of Women's Writing (1975) by Margaret Kaminski
Diary entries (1914 - 1974)
Context: The role of the writer is not to say what we can all say, but what we are unable to say. Most of the writing today which is called fiction contains such a poverty of language, such triteness, that it is a shrunken, diminished world we enter, poorer and more formless than the poorest cripple deprived of ears and eyes and tongue. The writer's responsibility is to increase, develop our senses, expand our vision, heighten our awareness and enrich our articulateness.

Source: (1962), Ch. 2 The Role of Government in a Free Society, p. 33

Remarks by the President and the Vice President on Gun Violence, 2013-01-16, January 16, 2013 http://www.whitehouse.gov/the-press-office/2013/01/16/remarks-president-and-vice-president-gun-violence,
2013

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.

Book 2, Chapter 8 “Revolutions” (p. 422)
Oswald Bastable, The Steel Tsar (1981)

Source: Deep and Wide: Creating Churches Unchurched People Love to Attend

The Decay of Conscience