"The Eugenic Value of Birth Control Propaganda", October 1921, page 5.
Birth Control Review, 1918-32
Works

Woman and the New Race
Margaret SangerFamous Margaret Sanger Quotes
“More children from the fit, less from the unfit — that is the chief issue in birth control.”
Editors of American Medicine in a review of Sanger's article "Why Not Birth Control Clinics in America?" published in Birth Control Review, May 1919
Misattributed
“Colored people are like human weeds and are to be exterminated.”
Unknown source, attributed by Life Education and Resource Network (LEARN) http://www.blackgenocide.org/planned.html and by Roger L. Roberson, Jr, The Bible & the Black Man: Breaking the Chains of Prejudice (2007), p. 18.
Seems to take "human weeds" from "a garden of children instead of a disorderly back lot overrun with human weeds" or from "the gradual suppression, elimination and eventual extirpation of defective stocks– those human weeds which threaten the blooming of the finest flowers of American civilization" and "exterminated" from "we do not want word to go out that we want to exterminate the Negro population, and the minister is the man who can straighten out that idea" (see above).
Misattributed
Source: Woman and the New Race, (1922), Chapter 2, "Women's Struggle for Freedom"
Source: Woman and the New Race, (1922), Chapter 18, "The Goal"
The Mike Wallace Interview (ABC) http://www.hrc.utexas.edu/multimedia/video/2008/wallace/sanger_margaret_t.html,
Posed question: "Do you believe in sin — When I say "believe" I don't mean believe in committing sin, do you believe there is such a thing as a sin
Margaret Sanger Quotes about children
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
Source: Margaret Sanger: An Autobiography (1938), Chapter 29, "While the Doctors Consult", p. 366.
Source: Woman and the New Race, (1922), Chapter 8, "Birth Control; A Parents' Problem or Woman's?"
W.E.B. DuBois, Birth Control Review, June 1932. Quoted by Sanger in her proposal for the "Negro Project."
Misattributed
Source: Margaret Sanger: An Autobiography (1938), Chapter 30, "Now Is the Time for Converse", pp. 374-375.
Source: The Pivot of Civilization, 1922, Chapter 5, "The Cruelty of Charity"
Margaret Sanger Quotes about birth
"Apostle of Birth Control Sees Cause Gaining Here", The New York Times, , p. XII http://query.nytimes.com/gst/abstract.html?res=9C01E1DF1F30E333A2575BC0A9629C946295D6CF.
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
"The Eugenic Value of Birth Control Propaganda", October 1921, page 5.
Birth Control Review, 1918-32
My Fight for Birth Control, 1931, page 133.
Unknown source, often attributed to The Woman Rebel.
Misattributed
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
Margaret Sanger: Trending quotes
To Roy Jansen, June 30, 1931. "Roy Jansen (1889-1975), an editor at the Pittsburgh Sun-Telegraph, wrote to Sanger on June 12 asking her to contribute 'some particularly intense or interesting moment in your life' for use in a series called 'Interesting Moments' that was to appear in several newspapers throughout the country." https://www.google.com/search?tbm=bks&hl=en&q=%22Selected+Papers+of+Margaret+Sanger%22&gws_rd=ssl#hl=en&tbm=bks&q=%22%281889-1975%29%2c%20an%20editor%20at%20the%20pittsburgh%20sun-telegraph%2c%20wrote%20to%20sanger%20on%20june%2012%22
The Selected Papers of Margaret Sanger: Volume 2: Birth Control Comes of Age, 1928-1939, (2007), Esther Katz, editor, University of Illinois Press, p. 99. <small>(Interlineations within the text are rendered within up and down arrows (T I) https://www.google.com/search?tbm=bks&hl=en&q=%22on+the+reverse+often+with+an+arrow%22&gws_rd=ssl#hl=en&tbm=bks&q=%22interlineations%20within%20the%20text%20are%20rendered%20within%20up%20and%20down%20arrows%22) https://www.google.com/#tbm=bks&q=%20%22dear%20mr.%20jansen:%20the%20most%20interesting%20incident%20of%20my%20life%20was%20some%20years%20ago%20when%20i%20was%20sitting%20beside%20a%20dying%20child%27s%20bed%22 https://www.google.com/#tbm=bks&q=%20%22i%20saw%20two%20bodies%20of%20the%20child%20%E2%80%94%20one%20slightly%20above%20the%20other%20exactly%20in%20the%22 https://www.google.com/#tbm=bks&q=%22in+a+horizontal+position+across+the+room+and+through+the+closed+steel+door%22
Notes at bottom of p. 99 read: "TLcy MSP, DLC (LCM 103:61). For ADf version dated June 12, 1931, see LCM 103:59. The published version was not found. 1. MS was probably referring to her daughter, Peggy Sanger, who died of pneumonia on November 6, 1915. 2. MS did not write about the two-body phenomena anywhere else, though she wrote in My Fight [for Birth Control] of Peggy's death that 'I saw the frail strength of her little body slip away' (126) http://birthcontrolreview.net/My%20Fight%20for%20Birth%20Control/Chapter%2009.pdf." http://books.google.com/books?id=yngbAQAAMAAJ&q=%22probably+referring+to+her+daughter,+Peggy+Sanger%22&dq=%22probably+referring+to+her+daughter,+Peggy+Sanger%22&hl=en&sa=X&ei=AslqVNqkNMagNsWtg-AC&ved=0CB0Q6AEwAA (MS = Margaret Sanger, TLcy = Typed Letter Carbon Copy, DLC = Library of Congress, ADf = Autograph Draft, LCM = Margaret Sanger Papers Microfilm, Library of Congress, Washington, D.C. https://www.google.com/search?q=Margaret+Sanger+Papers+on+microfilm%2C+Library+of+Congress+edition.&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=rcs#rls=org.mozilla:en-US:official&channel=rcs&q=Margaret+Sanger+Papers+microfilm%2C+Library+of+Congress https://www.google.com/search?q=Margaret+Sanger+Papers+on+microfilm%2C+Library+of+Congress+edition.&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=rcs#rls=org.mozilla:en-US:official&tbm=bks&q=%22When+citing+documents+on+a+microfilm+edition%2C+the+microfilm+abbreviation%22+ https://www.google.com/search?q=Margaret+Sanger+Papers+on+microfilm%2C+Library+of+Congress+edition.&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=rcs#rls=org.mozilla:en-US:official&tbm=bks&q=%22For+those+items+that+also+appear+on+the+Sanger+microfilm%2C+reel+and+frame+citations+follow+the+entry%22+</small>
Context: The most interesting incident of my life was some years ago when I was sitting beside a dying child's bed, watching the pulse and waiting for the crisis. It was about two o'clock in the morning. I started to take the pulse of the child and as I did so, I saw two bodies of the child - one slightly above the other exactly in the same position and an exact replica - except that it was not flesh but a substance more like cob-webs the color of smoke. I stood back and beheld this extraordinary phenomena and watched the upper body move majestically away in a horizontal position across the room and through the closed steel door. The physical body remained and was still breathing. Consciousness was never regained and an hour after, the little girl ceased to breathe.
“Peggy was sleeping. Her pulse was so soft and slow.”
This second version of Peggy Sanger's death quoted in Margaret Sanger: A Life of Passion, (2012), Jean H. Baker, Hill and Wang, New York, p. 103. https://www.google.com/#q=%22Peggy+was+sleeping.+Her+pulse+was+so+soft+and+slow%22&tbm=bks
Context: Peggy was sleeping. Her pulse was so soft and slow. I was unable to realize that the end was near and had my fingers on her ankle to get the pulse when before my eyes arose another Peggy horizontally sleeping [who] rose about a foot or more—fluttering and quivering a moment as if taking leave of its bondage and slowly and majestically [she] soared and floated across the bed and out through the iron closed door... Peggy had left for the great unknown and beyond.
“The most merciful thing that the large family does to one of its infant members is to kill it.”
Source: Woman and the New Race, (1922), Chapter 5, "The Wickedness of Creating Large Families."
Context: Thus we see that the second and third children have a very good chance to live through the first year. Children arriving later have less and less chance, until the twelfth has hardly any chance at all to live twelve months. This does not complete the case, however, for those who care to go farther into the subject will find that many of those who live for a year die before they reach the age of five. Many, perhaps, will think it idle to go farther in demonstrating the immorality of large families, but since there is still an abundance of proof at hand, it may be offered for the sake of those who find difficulty in adjusting old-fashioned ideas to the facts. The most merciful thing that the large family does to one of its infant members is to kill it. The same factors which create the terrible infant mortality rate, and which swell the death rate of children between the ages of one and five, operate even more extensively to lower the health rate of the surviving members.
Margaret Sanger Quotes
“Peggy had left for the great unknown and beyond”
This second version of Peggy Sanger's death quoted in Margaret Sanger: A Life of Passion, (2012), Jean H. Baker, Hill and Wang, New York, p. 103. https://www.google.com/#q=%22Peggy+was+sleeping.+Her+pulse+was+so+soft+and+slow%22&tbm=bks
Context: Peggy was sleeping. Her pulse was so soft and slow. I was unable to realize that the end was near and had my fingers on her ankle to get the pulse when before my eyes arose another Peggy horizontally sleeping [who] rose about a foot or more—fluttering and quivering a moment as if taking leave of its bondage and slowly and majestically [she] soared and floated across the bed and out through the iron closed door... Peggy had left for the great unknown and beyond.
“I should be the Hunger Strikee.”
Margaret Sanger asking Ethel Bryne to agree to Sanger's historically revised biopic. https://books.google.com/books?id=b3GBAwAAQBAJ&pg=PT264&source=gbs_toc_r&cad=3#v=onepage&q=tied%20up&f=false
" Who Was Margaret Sanger? http://www.ewtn.com/library/prolife/pp04a.txt", brochure published by the American Life League, regarding The Pivot of Civilization http://www.gutenberg.org/files/1689/1689.txt.
None of those quoted phrases actually appear in the book.
Misattributed
“Margaret Sanger: On the contrary, it seems to me that it is more practical and Humane.”
One Minute News (1947), interview with British Pathé's John Parsons
"A Plan for Peace", April 1932, pp. 107-108, summarizing an address to the New History Society, New York City,
Birth Control Review, 1918-32
“(We) are seeking to assist the white race toward the elimination of the unfit”
blacks
Falsely attributed to "Birth Control and Racial Betterment", Birth Control Review, February 1919 http://lifedynamics.com/app/uploads/2015/09/1919-02-February.pdf, by Steve Deace, " Planned Parenthood: The next relic from our racist past that must be purged http://www.washingtontimes.com/news/2015/jul/13/steve-deace-planned-parenthood-the-next-relic-from/", Midwest Conservative (The Washington Times),
Actual quote: "Like the advocates of Birth Control, the eugenicists, for instance, are seeking to assist the race toward the elimination of the unfit."
Misattributed
Ford Hall Forum Boston Speech, Woman Rebel, The Margaret Sanger Story, Peter Bagge.
Birth Control Review, December 1920
Birth Control Review, 1918-32
"The Eugenic Value of Birth Control Propaganda", October 1921, page 5.
Birth Control Review, 1918-32
“The marriage-bed is the most degenerating influence of the social order.”
Alice Groff, "The Marriage Bed", The Woman Rebel, V.I No. 5, p. 39 (edited by Margaret Sanger)
Misattributed
Source: The Pivot of Civilization, 1922, Chapter 8, "Dangers of Cradle Competition"
Source: Woman and the New Race, (1922), Chapter 10, "Contraceptives or Abortion?"
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
The Morality of Birth Control, 18 November 1921, Park Theatre, NY http://www.americanrhetoric.com/speeches/margaretsangermoralityofbirthcontrol.htm
Source: Woman and the New Race, (1922), Chapter 2, "Women's Struggle for Freedom"
One Minute News (1947), interview with British Pathé's John Parsons
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
One Minute News (1947), interview with British Pathé's John Parsons
“Blacks, soldiers, and Jews are a menace to the race.”
Unknown source. Often falsely cited as Birth Control Review, April 1933 http://lifedynamics.com/app/uploads/2015/09/1933-04-April.pdf, as in William D. Gairdner, The War Against the Family (1992), p. 464 https://books.google.com/books?id=vZsQ5d_43zEC&pg=PA464. No letters or articles by Sanger appear in that issue.
John George, in American Extremists: Militias, Supremacists, Klansmen, Communists & Others (1992), p. 415, describes this quote as "evidently concocted in the late 1980s".
Misattributed
Source: Margaret Sanger: An Autobiography (1938), Chapter 30, "Now Is the Time for Converse", p. 374.
Source: The Pivot of Civilization, 1922, Chapter 8, "Dangers of Cradle Competition" (also quoted in Charles Valenza, "Was Margaret Sanger a Racist?" Family Planning Perspectives, January-February 1985, page 44.)
The Pivot of Civilization, 1922
One Minute News (1947), interview with British Pathé's John Parsons
“John Parsons: Don’t you think such a theory, such a radical theory, is anti-social?”
One Minute News (1947), interview with British Pathé's John Parsons
Commenting on the 'Negro Project' in a letter to Dr. Clarence Gamble, December 10, 1939. http://smithlibraries.org/digital/items/show/495 - Sanger manuscripts, Sophia Smith Collection, Smith College, Northampton, Massachusetts. Also described in Linda Gordon's Woman's Body, Woman's Right: A Social History of Birth Control in America. New York: Grossman Publishers, 1976.
(Note: There is a different date circulated, e.g. Oct. 19, 1939; but Dec. 10 is the correct date of Mrs. Sanger's letter to Mr. Gamble.)
Margaret Sanger: An Autobiography (1938)
Misquoted by Diane S. Dew http://www.dianedew.com/sanger.htm (2001)
Omits words from a letter to Dr. Clarence Gamble Sanger proposing the "Negro Project", where Sanger wrote: "And <span style="color:darkgray">we do not want word to go out that we want to exterminate the Negro population,</span> and the minister is the man who can straighten out that idea <span style="color:darkgray">if it ever occurs to any of their more rebellious members.</span>"
The quote was similarly misused in "Women, Race, & Class" (12 February 1983) by Angela Davis, where it is implied that that Sanger was organizing an extermination campaign and the minister would be the main propaganda milling machine.
Misattributed
“Eugenic sterilization is an urgent need … We must prevent multiplication of this bad stock.”
Misquoting Ernst Rudin, "Eugenic Sterilization: An Urgent Need", Birth Control Review, April 1933. http://lifedynamics.com/app/uploads/2015/09/1933-04-April.pdf
Actual quote by Rudin: "Not only is it our task to prevent the multiplication of bad stocks, it is also to preserve the well-endowed stocks and to increase the birth-rate of the sound average population."
Misattributed
Source: The Pivot of Civilization, 1922, Chapter 12, "Woman and the Future"
Speech quoted in "Birth Control: What It Is, How It Works, What It Will Do." The Proceedings of the First American Birth Control Conference. Held at the Hotel Plaza, New York City, November 11-12, 1921. Published by the Birth Control Review, Gothic Press, pages 172 and 174.
Radio WFAB Syracuse, , transcripted in "The Meaning of Radio Birth Control", April 1924, p. 111
Birth Control Review, 1918-32
(Handbill advertising Sanger's first clinic, Brooklyn, New York, October 1916) https://sangerpapers.files.wordpress.com/2012/05/sanger_flyer.jpg
published in "Birthright: What's next for Planned Parenthood." Jill Lepore. The New Yorker, Nov. 14 2011 - page 48.
Source: Woman and the New Race, (1922), Chapter 8, "Birth Control; A Parents' Problem or Woman's?"
“You caused this. Mother is dead from having too many children.”
To her father at her mother's funeral.
Quoted in [2010-05-09, The Pill turns 50, Nidhi Bhushan, DNA, http://www.dnaindia.com/lifestyle/report_the-pill-turns-50_1380774]
"Morality and Birth Control", February-March, 1918, pp. 11,14.
Birth Control Review, 1918-32
The Pivot of Civilization, 1922
Video: https://www.youtube.com/watch?v=_BG11OHrCDk http://www.britishpathe.com/video/one-minute-news-8/query/margaret+slee
Ban on Babies is All Wet, Cry Angry Britons, Chicago Tribune, July 4, 1947, p. 9. https://www.google.com/search?q=MS+to+Robert+C.+Nowe%2C+Aug.+22%2C+1947&ie=utf-8&oe=utf-8#q=%22Ban+on+Babies+is+All+Wet%22
Granny Sanger' Drops a Bomb - A Ten Year Moratorium on Births, Margaret Sanger Papers, Newsletter #65 (Fall 2013) http://www.nyu.edu/projects/sanger/articles/grannysanger.php
One Minute News (1947), interview with British Pathé's John Parsons
Source: Woman and the New Race, (1922), Chapter 5, "The Wickedness of Creating Large Families."
Source: What Every Girl Should Know (1913), Chapter 4, "Sexual Impulses--Part II", p. 47.