Quotes about protein
A collection of quotes on the topic of protein, animals, animal, anime.
Quotes about protein

“No chemical carcinogen is nearly so important in causing human cancer as animal protein.”
Editorial for the newsletter New Century Nutrition, December 1995; quoted in A Vegetarian Doctor Speaks Out by Charles Attwood (Prescott, AZ: Hohm Press, 1998), p. 133.
Richard Carrier, "Bad Science, Worse Philosophy", Addendum B, http://www.infidels.org/library/modern/richard_carrier/addendaB.html#et_al at The Secular Web (Internet Infidels: 2000)
About

“James Wilks,” interview with Great Vegan Athletes (2013) http://www.greatveganathletes.com/content/james-wilks.

Interview, 1994; as quoted in Souls Like Ourselves by Andrea Wiebers and David Wiebers (Rochester, MN: Sojourn Press, 2000), p. 51.
I know as a fact I would not be here and I would not be in this condition now had I continued eating the way I was.
"Vegan Bodybuilder Jim Morris Talks to peta2" https://www.youtube.com/watch?v=BQrtu4nL1FE, video interview with PETA (October 24, 2013).
"Natalia Villaveces' Exclusive PETA Interview", video on PETA's YouTube channel (12 July 2011) https://www.youtube.com/watch?v=SX2alBCT70s.

“The human mind treats a new idea the same way the body treats a strange protein; it rejects it.”
In The Art of the Soluble, 1967.
1960s
Source: Science and Complexity, 1948, p. 537

Source: Dr. Spock's Baby and Child Care (1945), Seventh edition (1998), pp. 346-347

Chimeras of Experience: A Conversation with Jonah Lehrer (2009)

“ Why Vegan-Feminist? http://caroljadams.com/why-vegan-feminist/”, in caroljadams.com (2015). Retrieved on 18 June 2016.

Space Oddity
Song lyrics, Space Oddity (1969)

" Plant-Based", in JasonMraz.com (19 January 2012) http://jasonmraz.com/journal/2012/plant-based/, quoted in " Jason Mraz Is 'Stronger' and 'Better in Bed' on Vegan Diet", in Ecorazzi (21 January 2012) http://www.ecorazzi.com/2012/01/21/jason-mraz-is-stronger-and-better-in-bed-on-vegan-diet/

"The Vegetarian Athlete, Part I" https://web.archive.org/web/20041225183944/http://www.cycle-smart.com/Articles/find.php?search=37, on his website Cycle-Smart (2004).

Source: Veganist: Lose Weight, Get Healthy, Change the World (2011), p. 3

Source: Dr. Spock's Baby and Child Care (1945), Seventh edition (1998), pp. 331-332

Nobel Peace Prize Speech (1975)

On his vegan diet, in "Lean, Mean and Green…Vegan Fighter Mac Danzig Packs a Punch", in The MMA Digest.com (7 August 2007) http://www.themmadigest.com/lean-mean-and-green%E2%80%A6vegan-fighter-mac-danzig-packs-a-punch/

The Origin of Humankind (1994)

"Bob Harper of "Biggest Loser" talks diet, fitness" https://www.reuters.com/article/us-biggestloser/bob-harper-of-biggest-loser-talks-diet-fitness-idUSTRE78F2CV20110916, interview with Reuters (September 16, 2011).

Source: Introduction to Systems Philosophy (1972), p. 83.

Reported in "Huge Study Of Diet Indicts Fat And Meat" http://www.nytimes.com/1990/05/08/science/huge-study-of-diet-indicts-fat-and-meat.html?pagewanted=2 by Jane Brody, in The New York Times (8 May 1990), p. 2.
Source: 1970s, Ecodynamics: A New Theory Of Societal Evolution, 1978, p. 28

“PETA’s Sexiest Vegan Celebrities of 2014: Thandie Newton and David Haye Nab Top Honours!,” in Peta.org.uk (23 December 2014) http://www.peta.org.uk/blog/petas-sexiest-vegan-celebrities-2014-thandie-newton-david-haye-nab-top-honours/.

Source: Are you being brainwashed?: Propaganda in science textbooks (2007), p. 20
"Steve Wynn: Viva Las Vegan", interview with the Las Vegas Weekly (4 November 2010) https://lasvegasweekly.com/dining/2010/nov/04/steve-wynn-viva-las-vegan/.
John R. Platt (1965). " Chemical Aspects of Genetics http://www.annualreviews.org/doi/abs/10.1146/annurev.pc.16.100165.002443?journalCode=physchem". In: Annual Review of Physical Chemistry.. Vol. 16. p. 503

Gregory S. Paul (1988) Predatory Dinosaurs of the World, Simon and Schuster, p. 19
Predatory Dinosaurs of the World
"Brotherhood by Inversion", p. 330
Leonardo's Mountain of Clams and the Diet of Worms (1998)

Source: Dr. Spock's Baby and Child Care (1945), Seventh edition (1998), p. 346
"Fall in the House of Ussher", p. 187
Eight Little Piggies (1993)

Message attached to his YouTube video “555kg yoke-carry for 10m in the middle of Berlin” (1 September 2013) https://www.youtube.com/watch?v=8vUQISAuFiI.

During a skit before a commercial break on BBC America Comedy Live Presents Dylan Moran (2005).
Other

Mazurek, Maria (7 July 2017): Cudowna armia, która broni naszego ciała http://plus.gazetakrakowska.pl/magazyn/a/cudowna-armia-ktora-broni-naszego-ciala,12271571. Gazeta Krakowska (in Polish), pp. 18–19.

" Arnold Schwarzenegger: Stop eating meat and save the planet http://www.bbc.co.uk/newsbeat/article/35038053/arnold-schwarzenegger-stop-eating-meat-and-save-the-planet", in BBC Newsbeat website (8 December 2015)
2010s
Source: Evolution: A Theory in Crisis (1986), p. 250

The Heretic's Feast: A History of Vegetarianism (Hanover and London: University Press of New England, 1996), p. 16 https://books.google.it/books?id=rIjZo-cvifAC&pg=PA16.
Gish has repeatedly been challenged to support this claim, but has failed to do so: ** Source http://www.talkorigins.org/faqs/cre-error.html

volume III, chapter I: "The Spread of Evolution", page 18 http://darwin-online.org.uk/content/frameset?pageseq=30&itemID=F1452.3&viewtype=image; letter to Joseph Hooker (1871)
The Life and Letters of Charles Darwin (1887)

"Tarsier"
Poems New and Collected (1998), No End of Fun (1967)

Interview in the book What the Health https://books.google.it/books?id=FIY8DgAAQBAJ&pg=PT0 by Eunice Wong (Xlibris, 2017).

"On Assignment: Chelsea Clinton admires vegetarian stands taken by Stella, Linda McCartney" http://rockcenter.nbcnews.com/_news/2013/06/19/19026302-on-assignment-chelsea-clinton-admires-vegetarian-stands-taken-by-stella-linda-mccartney?lite, Rock Center NBC News (20 June 2013).
Interview in the book What the Health https://books.google.it/books?id=FIY8DgAAQBAJ&pg=PT0 by Eunice Wong (Xlibris, 2017), ch. 1.

"They Hunger for Success" https://www.si.com/vault/1977/02/28/560840/they-hunger-for-success, interview with Sports Illustrated (February 28, 1977).

Source: Permaculture: A Designers' Manual (1988), chapter 8.15

"The Furniture Rule", explaining the differences and similarities between the fields of weird fiction in Dreamsongs

Source: In My Own Way: An Autobiography 1915-1965 (1972), p. 122
Mandalas for Meditation (Sterling Publishing, 2001), pp. 10 https://books.google.it/books?id=Sq7h2sgA004C&pg=PA10-11.

Introduction (p. 7)
The Dragons of Eden (1977)

(with Jean Medawar) Aristotle to Zoos: A Philosophical Dictionary of Biology, 1983, p. 275.
1980s

“Life consists of the interplay of two kinds of chemicals: proteins and DNA.”
Source: Genome (1999), Chapter 1 “Life” (p. 17)

“Almost everything in the body, from hair to hormones, is either made of proteins or made by them.”
Introduction (p. 9)
Genome (1999)