Quotes about harm
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In Orlando after the Orlando nightclub shooting ([President Obama: Orlando Families' Grief Is 'Beyond Description', Time, Maya, Rhodan, June 16, 2016, September 2, 2018, http://time.com/4372190/orlando-shooting-barack-obama-joe-biden-grief/]; [‘Our hearts are broken, too’: Obama visits survivors of Orlando rampage, Katie, Zezima, Ellen, Nakashima, Mark, Berman, June 16, 2016, September 2, 2018, The Washington Post, https://www.washingtonpost.com/news/post-nation/wp/2016/06/16/obama-looks-toward-grieving-orlando-in-visit-as-political-showdowns-expand-after-massacre/]; [After meeting with Orlando victims, Obama renews call for gun control, Gregory, Korte, USA Today, June 16, 2016, September 6, 2018, https://www.usatoday.com/story/news/politics/2016/06/16/obama-biden-visit-orlando-emotional-visit-after-shooting/85973066/]).
2016, After the Orlando nightclub shooting (June 2016)

Preface (1957)
1920s, Why I Am Not a Christian (1927)

"President Obama calls Charleston shooting 'senseless,' criticizes gun laws" http://www.washingtonpost.com/blogs/post-politics/wp/2015/06/18/president-obama-calls-charleston-shooting-senseless-criticizes-gun-laws/ by Jose A. DelReal and Juliet Eilperin, The Washington Post (18 June 2015)
2015

Small Catechism http://www.ccel.org/ccel/luther/smallcat.text.i.5.html|The, The Fifth Commandment, (1529)

Source: A Sincere Admonition to All Christians to Guard Against Insurrection and Rebellion (1522), pp. 62-63

2016, Upholding the Legacy of Those We Lost on September 11th (September 2016)

Letter to Pierre Chanut (Nov. 1, 1646) as quoted by Amir Aczel, Descartes' Secret Notebook (2005) citing René Descartes: Correspondance avec Elizabeth et autres lettres (1989) ed., Jean-Marie and M. Beysaade, pp. 245-246.

Apologia Pro Vita Sua [A defense of one's own life] (1864)

1910s, The World Movement (1910)

Où est le prince assez instruit pour savoir que depuis dix-sept cents ans la secte chrétienne n’a jamais fait que du mal?
Letters of Voltaire and Frederick the Great (New York: Brentano's, 1927), transl. Richard Aldington, letter 160 from Voltaire to Frederick II of Prussia, 6 April 1767 http://perso.orange.fr/dboudin/VOLTAIRE/45/1767/6824.html
Citas

Source: 1910s, Theodore Roosevelt — An Autobiography (1913), Ch. VIII : The New York Governorship

A Commentary on St. Paul's Epistle to the Galatians https://books.google.com/books?id=zeCWncYgGOgC&pg=PA37&source=gbs_toc_r&cad=3#v=onepage&q&f=false by Martin Luther, Johann Friedrich Wilhelm Tischer, Samuel Simon Schmucker Chapter 3, p. 286
Commentary on the Epistle to the Galatians (1535)

“The principal source of the harm done by the State is the fact that power is its chief end.”
Principles of Social Reconstruction (1917), Ch. II: The State
1910s

Homilies on Timothy http://www.ccel.org/ccel/schaff/npnf113/Page_429.html, Homily VII

“It is not necessary to prohibit or encourage oddities of conduct which are not harmful.”
Napoleon : In His Own Words (1916)

1910s, The Progressives, Past and Present (1910)

2013, "Let Freedom Ring" Ceremony (August 2013)

“Such as harm is when it hurts me not, is good which avails me not.”
The Notebooks of Leonardo da Vinci (1883), X Studies and Sketches for Pictures and Decorations

Parochial and Plain Sermons, London, 1868; quoted in Matthew Scully, [//books.google.it/books?id=SYY7AAAAQBAJ&pg=PT30 Dominion] (2002).

1960s-1980s, "The Problem of Social Cost" (1960)

The Future of Science (1959), p. 79; also in BBC The Listener, Vol. 61 (1959), p. 505
1950s

Source: 1910s, Proposed Roads To Freedom (1918), Ch. V: Government and Law

2016, Memorial Service for Fallen Dallas Police Officers (July 2016)

Alexander's letter to Persian king Darius III of Persia in response to a truce plea, as quoted in Anabasis Alexandri by Arrian; translated as Anabasis of Alexander by P. A. Brunt, for the "Loeb Edition" Book II 14, 4

"Technology Is The Target", point 2
Hit Where It Hurts (2002)

Regarding the treatment of former Confederate soldiers. In Richmond, Virginia (April 4, 1865), as quoted in Incidents and Anecdotes of the Civil War https://archive.org/download/incidentsanecdot00port/incidentsanecdot00port.pdf (1885), by David Dixon Porter, p. 312
1860s, Tour of Richmond (1865)

“Let us read, and let us dance; these two amusements will never do any harm to the world.”
Laissez lire, et laissez danser; ces deux amusements ne feront jamais de mal au monde.
"Liberty of the Press," Dictionnaire philosophique (1785-1789)
Citas

“I cannot bring myself to believe that any human being lives who would do me any harm.”
Remark to Gen. Edward H. Ripley (5 April 1865), recalled during Ripley's speech http://books.google.com/books?id=1OoSAAAAYAAJ&pg=PA353&dq=believe at the 41st annual meeting of the Reunion Society of Vermont Officers (1 November 1904)
Posthumous attributions

Letter to James F. Morton (January 1931), in Selected Letters III, 1929-1931 edited by August Derleth and Donald Wandrei, p. 253
Non-Fiction, Letters, to James Ferdinand Morton, Jr.

“It is better to die well, than to live wrongly (…) who is afraid of death loses the joy of life; truth prevails all, prevails who is killed, because no adversity can harm him, who is not dominated by injustice.”
Melius est bene mori, quam male vivere (...) qui mortem metuit, amittit gaudia vitae; super omnia vincit veritas, vincit, qui occiditur, quia nulla ei nocet adversitas, si nulla ei dominatur iniquitas.
Quoted in John Huss: His Life, Teachings and Death, After Five Hundred Years (1915) by David Schley Schaff, p. 58.
Jan Hus in Letter to Christian of Prachatice, probably the most influential of his quotes, first adopted as the motto by Hussite warriors, centuries later this motto was inscribed on the banner of the Presidents of the Czechoslovakia and now (in Czech translation) is inscribed on the banner of the President of the Czech Republic.

Source: 1910s, Mysticism and Logic and Other Essays http://archive.org/stream/mysticism00russuoft/mysticism00russuoft_djvu.txt (1918), Ch. 9: On the Notion of Cause

From "My gilded prison", interview by J. C. Panek, L'Indic magazine https://fr.wikipedia.org/wiki/L'Indic_magazine (November 1997).
In interviews etc., About love

Eight or Nine Wise Words About Letter-Writing (1890)

Telle est donc la condition humaine que souhaiter la grandeur de son pays, c’est souhaiter du mal à ses voisins.
"Fatherland" (1764)
Citas, Dictionnaire philosophique (1764)

Source: Against the Heavenly Prophets in the Matter of Images and Sacraments (1525), pp. 84-85

2015, Remarks after the Umpqua Community College shooting (October 2015)

“To me, a painter, if not the most useful, is the least harmful member of our society.”
In response to criticism of controversial paintings, in Self Portrait (1963), p. 342
Context: There is … your high bridge in Pasadena from which every once in a while someone jumps off, committing suicide. There is no question of removing the bridge. Poems have been written by well-known authors that are supposed to have driven love-sick young people to suicide. These works are not banned. Thousands lose their lives in automobile accidents, yet nothing is done to restrain manufacturers from building lethal instruments that can do more than 30 miles an hour. To me, a painter, if not the most useful, is the least harmful member of our society. An unskilled cook or doctor can put our lives in danger. l have tried … to paint a picture that would, like the beautiful head of Medusa, turn the spectator to stone … so that certain ones who looked at it would drop dead … but l have not yet succeeded!

1920s, The Prospects of Industrial Civilization (1923)
Context: The governors of the world believe, and have always believed, that virtue can only be taught by teaching falsehood, and that any man who knew the truth would be wicked. I disbelieve this, absolutely and entirely. I believe that love of truth is the basis of all real virtue, and that virtues based upon lies can only do harm.

Reverence for Life (1969)
Context: I do not want to frighten you by telling you about the temptations life will bring. Anyone who is healthy in spirit will overcome them. But there is something I want you to realize. It does not matter so much what you do. What matters is whether your soul is harmed by what you do. If your soul is harmed, something irreparable happens, the extent of which you won't realize until it will be too late.

1940s, Philosophy for Laymen (1946)
Context: The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. If you take your children for a picnic on a doubtful day, they will demand a dogmatic answer as to whether it will be fine or wet, and be disappointed in you when you cannot be sure. The same sort of assurance is demanded, in later life, of those who undertake to lead populations into the Promised Land. “Liquidate the capitalists and the survivors will enjoy eternal bliss.” “Exterminate the Jews and everyone will be virtuous.” “Kill the Croats and let the Serbs reign.” “Kill the Serbs and let the Croats reign.” These are samples of the slogans that have won wide popular acceptance in our time. Even a modicum of philosophy would make it impossible to accept such bloodthirsty nonsense. But so long as men are not trained to withhold judgment in the absence of evidence, they will be led astray by cocksure prophets, and it is likely that their leaders will be either ignorant fanatics or dishonest charlatans. To endure uncertainty is difficult, but so are most of the other virtues. For the learning of every virtue there is an appropriate discipline, and for the learning of suspended judgment the best discipline is philosophy.
But if philosophy is to serve a positive purpose, it must not teach mere skepticism, for, while the dogmatist is harmful, the skeptic is useless. Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or of ignorance.

1910s, Address to the Knights of Columbus (1915)
Context: One of the most important things to secure for him is the right to hold and to express the religious views that best meet his own soul needs. Any political movement directed against anybody of our fellow- citizens because of their religious creed is a grave offense against American principles and American institutions. It is a wicked thing either to support or to oppose a man because of the creed he professes. This applies to Jew and Gentile, to Catholic and Protestant, and to the man who would be regarded as unorthodox by all of them alike. Political movements directed against men because of their religious belief, and intended to prevent men of that creed from holding office, have never accomplished anything but harm. This was true in the days of the ‘Know-Nothing’ and Native-American parties in the middle of the last century; and it is just as true to-day. Such a movement directly contravenes the spirit of the Constitution itself. Washington and his associates believed that it was essential to the existence of this Republic that there should never be any union of Church and State; and such union is partially accomplished wherever a given creed is aided by the State or when any public servant is elected or defeated because of his creed. The Constitution explicitly forbids the requiring of any religious test as a qualification for holding office. To impose such a test by popular vote is as bad as to impose it by law. To vote either for or against a man because of his creed is to impose upon him a religious test and is a clear violation of the spirit of the Constitution.
Time is an Artist (1978) Epilogue : Old is Beautiful http://taimur.sarangi.info/text/kaufmann_time.htm
Context: Of course, not everything old is beautiful, any more than everything black, or everything white, or everything young. But the notion that old means ugly is every bit as harmful as the prejudice that black is ugly. In one way it is even more pernicious.
The notion that only what is new and young is beautiful poisons our relationship to the past and to our own future. It keeps us from understanding our roots and the greatest works of our culture and other cultures. It also makes us dread what lies ahead of us and leads many to shirk reality.

1860s, Allow the humblest man an equal chance (1860)
Context: One of the reasons why I am opposed to Slavery is just here. What is the true condition of the laborer? I take it that it is best for all to leave each man free to acquire property as fast as he can. Some will get wealthy. I don't believe in a law to prevent a man from getting rich; it would do more harm than good. So while we do not propose any war upon capital, we do wish to allow the humblest man an equal chance to get rich with everybody else. When one starts poor, as most do in the race of life, free society is such that he knows he can better his condition; he knows that there is no fixed condition of labor, for his whole life. I am not ashamed to confess that twenty five years ago I was a hired laborer, mauling rails, at work on a flat-boat — just what might happen to any poor man's son! I want every man to have the chance — and I believe a black man is entitled to it — in which he can better his condition — when he may look forward and hope to be a hired laborer this year and the next, work for himself afterward, and finally to hire men to work for him! That is the true system.

Socialism (1922), Epilogue (1947)
Context: State and government are the social apparatus of violent coercion and repression. Such an apparatus, the police power, is indispensable in order to prevent anti-social individuals and bands from destroying social co-operation. Violent prevention and suppression of anti-social activities benefit the whole of society and each of its members. But violence and oppression are none the less evils and corrupt those in charge of their application. It is necessary to restrict the power of those in office lest they become absolute despots. Society cannot exist without an apparatus of violent coercion. But neither can it exist if the office holders are irresponsible tyrants free to inflict harm upon those they dislike.

Reverence for Life (1969)
Context: At sunset of the third day, near the village of Igendja, we moved along an island set in the middle of the wide river. On a sandback to our left, four hippopotamuses and their young plodded along in our same direction. Just then, in my great tiredness and discouragement, the phrase "Reverence for Life" struck me like a flash. As far as I knew, it was a phrase I had never heard nor ever read. I realized at once that it carried within itself the solution to the problem that had been torturing me. Now I knew that a system of values which concerns itself only with our relationship to other people is incomplete and therefore lacking in power for good. Only by means of reverence for life can we establish a spiritual and humane relationship with both people and all living creatures within our reach. Only in this fashion can we avoid harming others, and, within the limits of our capacity, go to their aid whenever they need us.

In reference to the Christian precept that God "hates sin but loves the sinner". Part IV, Chapter 9, A Tussle with Power. pp. 230-231. Also quoted in The Essential Gandhi: An Anthology of His Writings on His Life, Work, and Ideas (2012), p. 83
1920s, An Autobiography (1927)
Context: "Hate the sin and not the sinner" is a precept which, though easy enough to understand, is rarely practiced, and that is why the poison of hatred spreads in the world... Man and his deed are two distinct things. It is quite proper to resist and attack a system, but to resist and attack its author is tantamount to resisting and attacking one-self. For we are all tarred with the same brush and are children of one and the same Creator, and as such the divine powers within us are infinite. To slight a single human being is to slight those divine powers, and thus to harm not only that being, but with him, the whole world.

1900s, "In God we Trust" letter (1907)
Context: My own feeling in the matter is due to my very firm conviction that to put such a motto on coins, or to use it in any kindred manner, not only does not good but does positive harm, and is in effect irreverence which comes dangerously close to sacrilege. A beautiful and solemn sentence such as the one in question should be treated and uttered only with that fine reverence which necessarily implies a certain exaltation of spirit. Any use which tends to cheapen it, and, above all, any use which tends to secure its being treated in a spirit of levity, is free from every standpoint profoundly to be regretted. It is a motto which it is indeed well to have inscribed on our great national monuments, in our temples of justice, in our legislative halls, and in buildings such as those at West Point and Annapolis - in short, wherever it will tend to arouse and inspire a lofty emotion in those who look thereon. But it seems to be eminently unwise to cheapen such a motto by use on coins, just as it would be to cheapen it by use on postage stamps, or in advertisements.

On Truth and Lie in an Extra-Moral Sense (1873)
Context: The liar is a person who uses the valid designations, the words, in order to make something which is unreal appear to be real. He says, for example, "I am rich," when the proper designation for his condition would be "poor." He misuses fixed conventions by means of arbitrary substitutions or even reversals of names. If he does this in a selfish and moreover harmful manner, society will cease to trust him and will thereby exclude him. What men avoid by excluding the liar is not so much being defrauded as it is being harmed by means of fraud. Thus, even at this stage, what they hate is basically not deception itself, but rather the unpleasant, hated consequences of certain sorts of deception. It is in a similarly restricted sense that man now wants nothing but truth: he desires the pleasant, life-preserving consequences of truth. He is indifferent toward pure knowledge which has no consequences; toward those truths which are possibly harmful and destructive he is even hostilely inclined.

From the esplanade wall at Oenoanda, now in Turkey, as recorded by Diogenes of Oenoanda

Letter to Frederick Ayers (5 May 1943), published in The Patton Papers 1940-1945 (1996) edited by Martin Blumenson, p. 242
Context: The publicity I have been getting, a good deal of which is untrue, and the rest of it ill considered, has done me more harm than good. The only way you get on in this profession is to have the reputation of doing what you are told as thoroughly as possible. So far I have been able to accomplish that, and I believe I have gotten quite a reputation from not kicking at peculiar assignments.

31
Sovereign Maxims
Variant: Natural justice is a pledge of reciprocal benefit, to prevent one man from harming or being harmed by another.

“This very inadequate notion of virtue is an outcome of taboo morality, and has done untold harm.”
Source: 1950s, Human Society in Ethics and Politics (1954), p. 32
Context: If throughout your life you abstain from murder, theft, fornication, perjury, blasphemy, and disrespect toward your parents, your church, and your king, you are conventionally held to deserve moral admiration even if you have never done a single kind or generous or useful action. This very inadequate notion of virtue is an outcome of taboo morality, and has done untold harm.

Umar ibn al-Khattab, Vol. 2, p. 389-390, also quoted in At-Tabqaat ul-Kabir, Vol. 3, p. 339
Last Advise

Original: (tl) ‘Yang aming away ko sa Katoliko amin lang yan personal. Kayong mga adik, ‘wag ninyong totohanin ‘yong pukpokin yung bishop at kardinal, hindi sila kasali sa political ruckus.
About-face: Duterte now says ‘Don’t kill bishops, priests’ https://newsinfo.inquirer.net/1089736/about-face-duterte-now-says-dont-kill-bishops-priests(February 25, 2019)

“The power of intuitive understanding will protect you from harm until the end of your days.”

“The longer we dwell on our misfortunes, the greater is their power to harm us.”

As attributed by Kai Lehmann, curator of the exhibition "Luther und die Hexen" ("Luther and the witches"). (2013) in “Interview with Dr. Kai Lehmann, curator of the exhibition "Luther und die Hexen" ("Luther and the witches")“ https://www.luther2017.de/en/wiki/martin-luther-and-the-witches/kai-lehmann-martin-luther-firmly-believed-in-witches/
Disputed

Source: Speech at the Academy of Berlin of 27 January 1772 (inside Luca de Samuele Cagnazzi, Saggio sopra i principali metodi d'istruire i fanciulli https://books.google.it/books?id=BUdCqC_j9z8C&newbks=1&newbks_redir=0&hl=it&pg=PA12#v=onepage&q&f=false - 1819 - pp. 12-13 )

“I have noticed that nothing I have never said ever did me any harm.”

“My queerness is not a vice, is not deliberate, and harms no one.”

“Fashions have done more harm than revolutions.”
“That's all I want- to do no harm.”
Source: Wicked: The Life and Times of the Wicked Witch of the West

“Those that can heal can harm; those that can cure can kill.”
Source: Witch Child

“If only we could see in advance all the harm that can come from the good we think we are doing.”
Source: Six Characters in Search of an Author
Source: The Darkest Whisper