Not found in any of Thomas Jefferson's writings. This may be a conflation of Jefferson's "chains of the Constitution" comment with Ayn Rand's statement in her essay, Man's Rights: "There are two potential violators of man’s rights: the criminals and the government. The great achievement of the United States was to draw a distinction between these two — by forbidding to the second the legalized version of the activities of the first." http://www.monticello.org/site/jefferson/two-enemies-people-are-criminals-and-governmentquotation
Misattributed
Thomas Jefferson: Government (page 3)
Thomas Jefferson was 3rd President of the United States of America. Explore interesting quotes on government.
Thomas Jefferson's Seventh State of the Union Address (27 October 1807). Description of the negotiations and rejected treaty of James Monroe and William Pinkney with Britain over maritime rights, and subsequent negotiations over the British sinking of the American ship Chesapeake, leading to an American embargo (The Embargo Act).
1800s, Second Presidential Administration (1805-1809)
Letter to Albert Gallatin, 1803. ME 10:437
Posthumous publications, On financial matters
Letter to Danbury Baptist Association, CT. (1 January 1802) This statement is the origin of the often used phrase "separation of Church and State".
1800s, First Presidential Administration (1801–1805)
Letter http://books.google.com/books?vid=0Fz_zz_wSWAiVg9LI1&id=vvVVhCadyK4C&pg=PA192&vq=%22impeachment+is+an+impracticable+thing%22&dq=%22jeffersons+works%22 to Thomas Ritchie (25 December 1820)
1820s
1800s, First Inaugural Address (1801)
Letter to colonel Randolph as quoted in The Dark Side of Thomas Jefferson http://www.smithsonianmag.com/history/the-dark-side-of-thomas-jefferson-35976004/, by Henry Wiencek, Smithsonian Magazine, (October 2012)
Attributed
Letter to Colonel Edward Carrington, Paris, (16 January 1787)
1780s
1820s, Letter to A. Coray (1823)
Letter to William Hunter (11 March 1790)
1790s
The earliest known appearance of this statement is from 1895 (Joshua Douglass, "Bimetallism and Currency", American Magazine of Civics, 7:256). It is apparently a combination of paraphrases or approximate quotations from three separate letters of Jefferson (longer excerpts in sourced section):
I sincerely believe, with you, that banking institutions are more dangerous than standing armies...
Letter to John Taylor (1816)
The bank mania...is raising up a moneyed aristocracy in our country which has already set the government at defiance...
Letter to Josephus B. Stuart (1817)
Bank paper must be suppressed, and the circulating medium must be restored to the nation to whom it belongs.
Letter to John W. Eppes (1813)
Misattributed
Letter to Roger C. Weightman, on the decision for Independence made in 1776, often quoted as if in reference solely to the document the Declaration of Independence (24 June 1826)
1820s
The Anas (February 1, 1800). Published in The Works of Thomas Jefferson in Twelve Volumes http://oll.libertyfund.org/ToC/0054.php, Federal Edition, Paul Leicester Ford, ed., New York: G. P. Putnam's Sons, 1904, Vol. 1 http://oll.libertyfund.org/Texts/Jefferson0136/Works/0054-01_Bk.pdf, pp. 352–353
1800s
Letter to Judge John Tyler http://www.constitution.org/tj/jeff11.txt (June 28, 1804); in: The Writings of Thomas Jefferson, Memorial Edition (ME) (Lipscomb and Bergh, editors), 20 Vols., Washington, D.C., 1903-04, Volume 11, page 33
1800s, First Presidential Administration (1801–1805)
1810s, Letter to H. Tompkinson (AKA Samuel Kercheval) (1816)
Commonly quoted on many websites, this quotation is actually from an address by President Gerald Ford to the US Congress (12 August 1974) http://www.bartleby.com/73/714.html
Misattributed
Letter to Alexander von Humboldt (6 December 1813)
Scanned letter at The Library of Congress http://memory.loc.gov/cgi-bin/ampage?collId=mtj1&fileName=mtj1page047.db&recNum=74&itemLink=/ammem/mtjhtml/mtjser1.html&linkText=7
Transcript at The Library of Congress http://memory.loc.gov/cgi-bin/query/r?ammem/mtj:@field(DOCID+@lit(tj110127))
1810s
Thomas Jefferson to Jacob De La Motta, September 1, 1820. Manuscript Division, Papers of Thomas Jefferson. http://www.jewishvirtuallibrary.org/jsource/loc/madison.html For the background of the letter see "Thomas Jefferson's Letter on Religious Freedom" Dr. Kenneth Libo Ph.D and Michael Skakun from the Center for Jewish History, New York City, New York. http://sephardicoralhistory.org/education/essays.php?action=show&id=19
1820s
Letter to Charles Pinckney (1820) ME 15:280
Posthumous publications, On financial matters