“The mark of a single currency is not only that all other currencies must be extinguished but that the capacity of other institutions to issue currencies must also be extinguished…In the case of the United Kingdom, that would involve Parliament binding its successors in a way that it has hitherto regarded as unconstitutional.”

Source: Seven Great Statesmen in the Warfare of Humanity with Unreason (1915), p. 170-171
Context: Turgot's attempt... showed how the results that had followed Law's issues of paper money must follow all such issues. As regards currency inflation, Turgot saw that the issue of paper money beyond the point where it is convertible into coin is the beginning of disaster—that a standard of value must have value, just as a standard of length must have length, or a standard of capacity, capacity, or a standard of weight, weight. He showed that if a larger amount of the circulating medium is issued than is called for by the business of the country, it will begin to be discredited, and that paper, if its issue be not controlled by its relation to some real standard of value, inevitably depreciates no matter what stamp it bears. Turgot developed his argument [on currency inflation] with a depth, strength, clearness, and breadth, which have amazed every dispassionate reader from that day to this. It still remains one of the best presentations of this subject ever made; and what adds to our wonder is that it was not the result of a study of authorities, but was worked out wholly from his own observation and thought. Up to this time there were no authorities and no received doctrine on the subject; there were simply records of financial practice more or less vicious; it was reserved for this young student, in a letter not intended for publication, to lay down for the first time the great law in which the modern world, after all its puzzling and costly experiences, has found safety.

cnbc.com http://www.cnbc.com/id/102088768

Speech in the House of Commons (26 June 1991) http://hansard.millbanksystems.com/commons/1991/jun/26/European-Community
Post-Prime Ministerial

On BBC's Question Time (1 November 1990), quoted in Peter Sissons, When One Door Closes (Biteback, 2012).
Post-Prime Ministerial

Speech in Tamworth (15 June 1970), from Simon Heffer, Like the Roman. The Life of Enoch Powell (Phoenix, 1999), p. 563.
1970s

Source: Speech in London (21 March 1980), quoted in Enoch Powell on 1992 (Anaya, 1989), p. 97

Veto Message Regarding the Bank of the United States http://avalon.law.yale.edu/19th_century/ajveto01.asp (10 July 1832)
Often paraphrased as: If Congress has the right under the constitution to issue paper money, it was given them to be used by themselves, not to be delegated to individuals or corporations.
1830s
Context: It is maintained by some that the bank is a means of executing the constitutional power “to coin money and regulate the value thereof.” Congress have established a mint to coin money and passed laws to regulate the value thereof. The money so coined, with its value so regulated, and such foreign coins as Congress may adopt are the only currency known to the Constitution. But if they have other power to regulate the currency, it was conferred to be exercised by themselves, and not to be transferred to a corporation. If the bank be established for that purpose, with a charter unalterable without its consent, Congress have parted with their power for a term of years, during which the Constitution is a dead letter. It is neither necessary nor proper to transfer its legislative power to such a bank, and therefore unconstitutional.

December 8, 2010, video posting — www.kgun9.com, 9OYS Investigates: Who is Jared Loughner?, KGUN9, January 8, 2011, 2011-01-10 http://www.kgun9.com/Global/story.asp?S=13809065,

To the media immediately after the EEC Rome summit meeting (28 October, 1990); as reported in A Conservative Coup: The Fall of Margaret Thatcher (1992) by Alan Watkins.
Third term as Prime Minister