“Our object was to avert dangers which we thought were imminent, and to terminate a conflict which, according to our belief, would soon place in hostile collision great and powerful classes in this country. The maintenance of power was not a motive for the proposal of these measures; for, as I said before, I had not a doubt, that whether these measures were accompanied by failure or success, the certain issue must be the termination of the existence of this Government…in proposing our measures of commercial policy, I had no wish to rob others of the credit justly due to them…The name which ought to be, and will be, associated with the success of those measures, is the name of one who, acting, I believe, from pure and disinterested motives, has, with untiring energy, made appeals to our reason, and has enforced those appeals with an eloquence the more to be admired because it was unaffected and unadorned: the name which ought to be chiefly associated with the success of those measures, is the name of Richard Cobden…In relinquishing power…I shall leave a name execrated by every monopolist who, from less honourable motives, clamours for protection because it conduces to his own individual benefit; but it may be that I shall leave a name sometimes remembered with expressions of good will in the abodes of those whose lot it is to labour, and to earn their daily bread by the sweat of their brow, when they shall recruit their exhausted strength with abundant and untaxed food, the sweeter because it is no longer leavened by a sense of injustice.”

1990s, A Distinctly American Internationalism (November 1999)
Context: Some have tried to pose a choice between American ideals and American interests — between who we are and how we act. But the choice is false. America, by decision and destiny, promotes political freedom — and gains the most when democracy advances. America believes in free markets and free trade — and benefits most when markets are opened. America is a peaceful power — and gains the greatest dividend from democratic stability. Precisely because we have no territorial objectives, our gains are not measured in the losses of others. They are counted in the conflicts we avert, the prosperity we share and the peace we extend.

Speech http://hansard.millbanksystems.com/commons/1960/dec/15/south-west-africa in the House of Commons (15 December 1960)
Shadow Chancellor of the Exchequer

Speech before Congress (April 4, 1917), Congressional Record—Senate, April 4, 1917, 224–225.
Context: Mr. President, I had supposed until recently that it was the duty of senators and representatives in Congress to vote and act according to their convictions on all public matters that came before them for consideration and decision. Quite another doctrine has recently been promulgated by certain newspapers, which unfortunately seems to have found considerable support elsewhere, and that is the doctrine of “standing back of the President” without inquiring whether the President is right or wrong.
For myself, I have never subscribed to that doctrine and never shall. I shall support the President in the measures he proposes when I believe them to be right. I shall oppose measures proposed by the President when I believe them to be wrong.

Source: A Return to Love: Reflections on the Principles of "A Course in Miracles" (1992), Ch. 7 : Work, §3 : Personal Power, p. 190 (p. 165 in some editions). This famous passage from her book is often erroneously attributed to Nelson Mandela. About the mis-attribution Williamson said, "Several years ago, this paragraph from A Return to Love began popping up everywhere, attributed to Nelson Mandela's 1994 inaugural address. As honored as I would be had President Mandela quoted my words, indeed he did not. I have no idea where that story came from, but I am gratified that the paragraph has come to mean so much to so many people."
Variant which appears in the film Coach Carter (2005): "Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. It is our light, not our darkness that most frightens us. Your playing small does not serve the world. There is nothing enlightened about shrinking so that other people won't feel insecure around you. We are all meant to shine as children do. It's not just in some of us; it is in everyone. And as we let our own lights shine, we unconsciously give other people permission to do the same. As we are liberated from our own fear, our presence automatically liberates others."
Variant which appears in the film Akeelah and the Bee (2006), displayed in a picture frame on the wall, attributing it to Mandela: "Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. We ask ourselves, Who am I to be brilliant, gorgeous, talented, fabulous? Actually, who are you not to be? We were born to make manifest the glory of God that is within us. And as we let our own light shine, we unconsciously give other people permission to do the same."
Context: Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. It is our light, not our darkness that most frightens us. We ask ourselves, Who am I to be brilliant, gorgeous, talented, and fabulous? Actually, who are you not to be? You are a child of God. Your playing small does not serve the world. There is nothing enlightened about shrinking so that other people will not feel insecure around you. We are all meant to shine, as children do. We were born to make manifest the glory of God that is within us. It is not just in some of us; it is in everyone and as we let our own light shine, we unconsciously give others permission to do the same. As we are liberated from our own fear, our presence automatically liberates others.

Source: Radical Christian Discipleship (2012), p. 47

Letter to Gladstone (16 July 1860), quoted in Philip Guedalla (ed.), Gladstone and Palmerston, being the Correspondence of Lord Palmerston with Mr. Gladstone 1851-1865 (London: Victor Gollancz, 1928), pp. 142-143.
1860s

Who could have conceived that the investigation of petty games of chance would have led to the most sublime branch of mathematical science - the theory of probabilities?
Source: The Theory of Political Economy (1871), Chapter I, Introduction, p. 41.

Source: Hippolytus (428 BC), l. 701, translated by Edward P. Coleridge

"God"
Lyrics, John Lennon/Plastic Ono Band (1970)