Said on a television show, cited in Jeffrey Moussaieff Masson, The Pig Who Sang to the Moon: The Emotional World of Farm Animals (New York: Ballantine Books, 2004. ISBN 0-345-45282-8, ch. 1, p. 22 https://books.google.it/books?id=RbxeFLpNnxUC&pg=PA22.
Quotes about pig
page 3

Source: The Sex Sphere (1983), p. 130

Penultimate paragraph of the published script.
8 1/2 Women

The World's Last Night (1952)

From a PETA video (6 February 2013) https://www.youtube.com/watch?v=hSuLrvwLoLA, reported in "Casey Affleck’s ‘Go Vegan’ PSA", in peta2.com http://www.peta2.com/heroes/casey-afflecks-go-vegan-psa/.
Defence of Hindu Society (1983)
Source: Reflections (1999), p. 109
“My shoe has caught a Pig
I am a Pig Trap”
Pig poetry http://www.porkopolis.org/lib/poetry/hawkins-s.htm

During a campaign stop in Pawley's Island, South Carolina (February 19, 2016) http://www.nationalreview.com/corner/450574/donald-trump-tweet-fake-history-libel-war-crime. Referring to a false story about John J. Pershing which has circulated on the Internet.
2010s, 2016, February
"Watch “The Two Coreys” this Sunday", interview with PETA (27 July 2007) https://www.peta.org/blog/watch-two-coreys-sunday/.

Source: Twenty Years at Hull-House (1910), Ch. 17

“It’s so messy bleeding like a pig.”
A Murder is Announced (1950)

Manila Standard Today http://manilastandardtoday.com/mobile/2014/09/26/belmonte-to-purisima-resign-now
2014

On not wanting to deal with the US re: Edward Snowden, 25 June 2013 http://www.guardian.co.uk/world/2013/jun/25/edward-snowden-moscow-vladimir-putin. guardian.co.uk
2011 - 2015

“I think they put some lipstick on a pig, but it's still a pig.”
Criticizing Hillary Clinton's health-care plan as being "eerily reminiscent" of the plan she advocated as First Lady, 11 October 2007 http://www.latimes.com/news/nationworld/washingtondc/la-na-campaign10-2008sep10,0,311675.story
2000s, 2007

Source: Testimony of Frederick W. Taylor... 1912, p. 111.

To My People (July 4, 1973)

"Mike Ness: 'Meat's Not Green'", video interview with peta2 (28 April 2009) https://www.youtube.com/watch?v=3dg73SRrNjA.
“They put lipstick on the pig to try to sell it to somebody that didn't know what they were buying.”
CNBC House of Cards interview, 2009.

September 18, 1984 press reports, quoted in — [Congressional Record, The Town That Was Poisoned, United States House of Representatives, February 28, 1985, Congressman James H. Weaver]

IT Conversations: Bruce Schneier, Schneier, Bruce, Doug Kaye, 2004-04-16 http://www.itconversations.com/shows/detail119.html,
Human perception of reality, risk and terrorism
“ Mike White's 'Veggie Testimonial' https://www.youtube.com/watch?v=pF8PJJFgg4E”, ad for PETA (30 July 2009).

AronRa vs Ray Comfort (September 17th, 2012), Radio Paul's Radio Rants

Source: The Tales of Alvin Maker, Red Prophet (1988), Chapter 2.

pg. xlix
The Sports and Pastimes of the People of England (1801), Public entertainment

“Men are pigs. Too bad we own everything.”
As quoted in It's A Man's World : 800 Jokes from the Guy's (Warped) Point of View (2005) by Judy Brown, p. 132
What the Bones Tell Us (1997)

1962, quoted in Andriessen and Schoenberger, The Apollonian Clockwork (1989). Oxford: Oxford University Press.
1960s

Volume 2, Ch. 2
Fiction, The Book of the Long Sun (1993–1996)
English Fairy Tales (1890), Preface to English Fairy Tales, The Story of the Three Little Pigs

“That's a pig show. The lowest.”
On why she refused to appear on the Dean Martin Show, as quoted from: Cohn, Ellen. She is Woman, She is Helen Reddy, The New York Times. 24 June 1973 https://www.nytimes.com/1973/06/24/archives/she-is-woman-she-is-helen-reddy.html

To My People (July 4, 1973)

Title of a fictional work that he "quotes" from at the start of the book.
The Certain Hour (1916)
Interview with George D. Rodger (15 December 2002), in VeganSociety.com https://www.vegansociety.com/sites/default/files/DW_Interview_2002_Unabridged_Transcript.pdf.

Bullshit Fan Mail http://www.thebestpageintheuniverse.net/c.cgi?u=ihatemail0.
The Best Page in the Universe
Asia and Western Dominance: a survey of the Vasco Da Gama epoch of Asian history, 1498–1945

http://web.archive.org/web/20101014172908/http://rocknrolltales.com/read/afi
Newbery Award acceptance speech (1969)

2004, How to Talk to a Liberal (If You Must) (2004)
"Will We Still Eat Meat?", in Time magazine (8 November 1999), pp. 1 http://content.time.com/time/subscriber/article/0,33009,992523-1,00.html- 2 http://content.time.com/time/subscriber/article/0,33009,992523-2,00.html.

Source: What On Earth Is About To Happen… For Heaven’s Sake? (2013), p. 106

Galbraith, Ambassador’s Journal, 36
To John Kenneth Galbraith, who had been appointed American ambassador to India,

On the USA, said during his exile in Peking, as quoted by Oriana Fallaci (June 1973), Intervista con la Storia (sixth edition, 2011). page 112.
Interviews

“"Dear pig, are you willing to sell for one shilling
Your ring?" Said the Piggy, "I will."”
St. 3.
The Owl and the Pussycat (1871)

Animals and Us: Quotations, accessdate 1 December 2013, Theosophical Organization http://www.theosophical.org/publications/1325,

Seven Experiments That Could Change the World (London: Fourth Estate, 1994), p. 24.

" A welcome in the hillside http://www.camdennewjournal.com/welcome-hillside", interview with John Gulliver, in Camden New Journal (13 August 2015).
2000s
“A pig among people is a pig, he tells himself, but a pig among pigs is people.”
Section 38 (p. 118)
Venus Plus X (1960)

"Sadie Thompson" in Altogether - Rain (1934)

Quoted on The Washington Post, "Nancy Grace, Ruling for The Viewer" http://www.washingtonpost.com/wp-dyn/content/article/2005/06/26/AR2005062601211.html, June 27, 2005

“A drunkard is like a pig. The poor pig, however, is helpful. The drunk is worse and useless.”
Tripadis
Defying the Tomb: Selected Prison Writings and Art of Kevin Rashid Johnson (2010)

Related in The Pleasure of His Company, Paul Fay, Jr., New York: Harper & Row, 1966, p. 190. http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/JFK-Quotations.aspx
Attributed

“What about pigs, chickens, turkeys, fish, sheep?”
Part of the speech to the students of the Georgia Institute of Technology (Summer 2010)
Context: Is slavery - owner, victim, profit, domination - exclusive to the human race? Have blacks, Jews, women and children been the only victims of this atrocity? Have not cows been enslaved? What about pigs, chickens, turkeys, fish, sheep? If they're not enslaved, then what are they? Free? Can slavery have a victim that is neither a human, nor an animal? Have not the oceans, the forests, the earth itself, become victims of ownership too?
“I am well content as an Assistant Pig-Keeper.”
Source: The Chronicles of Prydain (1964–1968), Book V : The High King (1968), Chapter 21
Context: “Long ago I yearned to be a hero without knowing, in truth, what a hero was. Now, perhaps, I understand it a little better. A grower of turnips or a shaper of clay, a Commot farmer or a king — every man is a hero if he strives more for others than for himself alone. Once,” he added, “you told me that the seeking counts more than the finding. So, too, must the striving count more than the gain.
“Once, I hoped for a glorious destiny,” Taran went on, smiling at his own memory. “That dream has vanished with my childhood; and though a pleasant dream it was fit only for a child. I am well content as an Assistant Pig-Keeper.”

Source: Utilitarianism (1861), Ch. 2
Context: It is better to be a human dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied. And if the fool, or the pig, are of a different opinion, it is because they only know their own side of the question. The other party to the comparison knows both sides.
The Foundling, pp. 25–27
The Foundling and Other Tales of Prydain (1973)
Context: ... the book told him of other ways of the world; of cruelty, suffering, and death. He read of greed, hatred, and war; of men striving against one another with fire and sword; of the blossoming earth trampled underfoot, of harvests lost and lives cut short...
But now his heart lifted. These pages told not only of death, but of birth as well; how the earth turns in its own time and in its own way gives back what is given to it; how things lost may be found again; and how one day ends for another to begin. He learned that the lives of men are short and filled with pain, yet each one a priceless treasure, whether it be that of a prince or a pig-keeper. And, at the last, the book taught him that while nothing was certain, all was possible.

Source: Testimony of Frederick W. Taylor... 1912, p. 110.
Context: I ordinarily begin with a description of the pig-iron handler. For some reason, I don’t know exactly why, this illustration has been talked about a great deal, so much, in fact, that some people seem to think that the whole of scientific management consists in handling pig-iron. The only reason that I ever gave this illustration, however, was that pig-iron handling is the simplest kind of human effort; I know of nothing that is quite so simple as handling pig-iron. A man simply stoops down and with his hands picks up a piece of iron, and then walks a short distance and drops it on the ground. Now, it doesn’t look as if there was very much room for the development of a science; it doesn’t seem as if there was much room here for the scientific selection of the man nor for his progressive training, nor for cooperation between the two sides; but, I can say, without the slightest hesitation, that the science of handing pig-iron is so great that the man who is fit to handle pig-iron as his daily work cannot possibly understand the science; the man who is physically able to handle pig-iron and is sufficiently phlegmatic and stupid to choose this for his occupation is rarely able to comprehend the science of handling pig-iron; and this in ability of the man who is fit to do the work to understand the science of doing his work becomes more and more evident as the work becomes more complicated, all the way up the scale. I assert, without the slightest hesitation, that the high-class mechanic has a far smaller chance of ever thoroughly understanding the science of his work than the pig-iron handler has of understanding the science of his work, and I am going to try and prove to your satisfaction, gentlemen, that the man who is fit to work at any particular trade is unable to understand the science of that trade without the kindly help and cooperation of men of a totally different type of education, men whose education is not necessarily higher but a different type from his own.

Manuel, in Ch. I : How Manuel Left the Mire
Figures of Earth (1921)
Context: I shall not ever return to you, my pigs, because, at worst, to die valorously is better than to sleep out one's youth in the sun. A man has but one life. It is his all. Therefore I now depart from you, my pigs, to win me a fine wife and much wealth and leisure wherein to discharge my geas. And when my geas is lifted I shall not come back to you, my pigs, but I shall travel everywhither, and into the last limits of earth, so that I may see the ends of this world and may judge them while my life endures. For after that, they say, I judge not, but am judged: and a man whose life has gone out of him, my pigs, is not even good bacon.

Tinselworm (2008)

Manuel, in Ch. I : How Manuel Left the Mire
Figures of Earth (1921)
Context: I shall not ever return to you, my pigs, because, at worst, to die valorously is better than to sleep out one's youth in the sun. A man has but one life. It is his all. Therefore I now depart from you, my pigs, to win me a fine wife and much wealth and leisure wherein to discharge my geas. And when my geas is lifted I shall not come back to you, my pigs, but I shall travel everywhither, and into the last limits of earth, so that I may see the ends of this world and may judge them while my life endures. For after that, they say, I judge not, but am judged: and a man whose life has gone out of him, my pigs, is not even good bacon.

Part Troll (2004)

Source: Lord of the Flies (1954), Ch. 4: Painted Faces and Long Hair
Context: The chant was audible but at that distance still wordless. Behind Jack walked the twins, carrying a great stake on their shoulders. The gutted carcass of a pig swung from the stake, swinging heavily as the twins toiled over the uneven ground. The pig's head hung down with gaping neck and seemed to search for something on the ground. At last the words of the chant floated up to them, across the bowl of blackened wood and ashes.
"Kill the pig! Cut her throat! Spill the blood!"
Yet as the words became audible, the procession reached the steepest part of the mountain, and in a minute or two the chant had died away.

Source: Figures of Earth (1921), Ch. I : How Manuel Left the Mire
Context: They of Poictesme narrate that in the old days when miracles were as common as fruit pies, young Manuel was a swineherd, living modestly in attendance upon the miller's pigs. They tell also that Manuel was content enough: he knew not of the fate which was reserved for him.

A Declaration of the Independence of Cyberspace (1996)
Context: Your increasingly obsolete information industries would perpetuate themselves by proposing laws, in America and elsewhere, that claim to own speech itself throughout the world. These laws would declare ideas to be another industrial product, no more noble than pig iron. In our world, whatever the human mind may create can be reproduced and distributed infinitely at no cost. The global conveyance of thought no longer requires your factories to accomplish.
These increasingly hostile and colonial measures place us in the same position as those previous lovers of freedom and self-determination who had to reject the authorities of distant, uninformed powers. We must declare our virtual selves immune to your sovereignty, even as we continue to consent to your rule over our bodies. We will spread ourselves across the Planet so that no one can arrest our thoughts.
We will create a civilization of the Mind in Cyberspace. May it be more humane and fair than the world your governments have made before.

During Roger's Dark Side Of The Moon Tour at Verizon Wireless Amphitheater in Noblesville, Indiana when the pig was cut from the line and released into the sky.
Miscellaneous
“A pig is a pig," said the stranger, "and a pig-boy is a pig-boy.”
Source: The Chronicles of Prydain (1964–1968), Book II: The Black Cauldron (1965), Chapter 1 (Ellidyr)

“I'm quite lucky, because I've got a small, decorative concrete pig.”
Cosmic Jam (tour 1995, DVD 2005, 2006)

“There wouldn't be a swine flu if we treated the pigs better!”

Maurice Hankey's diary entry (12 May 1916), quoted in Stephen Roskill, Hankey, Man of Secrets: Volume I 1877-1919 (London: Collins, 1970), pp. 271-272.
About Curzon
Excerpt from Fred Hampton - "Political Prisoner" video https://www.youtube.com/watch?v=Wy1gveC3GVs.
Excerpt from Democracy Now http://www.democracynow.org/blog/2014/12/4/watch_the_assassination_of_fred_hampton.

CraveOnline http://www.craveonline.com/film/articles/507781-exclusive-cannes-interview-lloyd-kaufman-on-nuke-em-high May 28, 2013
2013

Hugh Trevor-Roper interviewed Morell in 1945.

Interview in the documentary-film Cowspiracy by Kip Andersen and Keegan Kuhn (2014).

"Some Pig" https://www.all-creatures.org/articles/ar-some-pig.html, All-Creatures.org (April 2013).

The Daily Chronicle on the 7 March 1917 https://www.rte.ie/centuryireland/index.php/articles/george-bernard-shaw-joyriding-on-the-front.
1910s, The Technique of War (1917)

Feng Shih-kuan (2017) cited in " Once formidable, Taiwan’s military now overshadowed by China’s https://www.todayonline.com/world/once-formidable-taiwans-military-now-overshadowed-chinas" on Today Online, 4 November 2017.
"Twenty One Reasons For Being A Vegetarian" (2007), in vernoncoleman.com http://www.vernoncoleman.com/twentyoner.htm.

"The Insatiable Appetites"
The Life of Birds (1998)