“The lower animals, like man, manifestly feel pleasure and pain, happiness and misery. Happiness is never better exhibited than by young animals, such as puppies, kittens, lambs, &c., when playing together, like our own children. Even insects play together, as has been described by that excellent observer, P. Huber, who saw ants chasing and pretending to bite each other, like so many puppies.
The fact that the lower animals are excited by the same emotions as ourselves is so well established, that it will not be necessary to weary the reader by many details. Terror acts in the same manner on them as on us, causing the muscles to tremble, the heart to palpitate, the sphincters to be relaxed, and the hair to stand on end. Suspicion, the offspring of fear, is eminently characteristic of most wild animals. Courage and timidity are extremely variable qualities in the individuals of the same species, as is plainly seen in our dogs. Some dogs and horses are ill-tempered and easily turn sulky; others are good-tempered; and these qualities are certainly inherited.”

— Charles Darwin , book The Descent of Man, and Selection in Relation to Sex

volume I, chapter II: "Comparison of the Mental Powers of Man and the Lower Animals", pages 39-40 http://darwin-online.org.uk/content/frameset?pageseq=52&itemID=F937.1&viewtype=image
The Descent of Man (1871)

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Charles Darwin 161

British naturalist, author of "On the origin of species, by… 1809–1882

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“There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.”

Charles Darwin (1809–1882) British naturalist, author of "On the origin of species, by means of natural selection"

“Better to be an animal than a man, an insect than an animal, a plant than an insect, and so on. Salvation? Whatever diminishes the kingdom of consciousness and compromises its supremacy.”

Emil M. Cioran book The Trouble With Being Born

The Trouble With Being Born (1973)
Source: The Trouble with Being Born

“We take it that when the state of things shall have arrived which we have been above attempting to describe, man will have become to the machine what the horse and the dog are to man. He will continue to exist, nay even to improve, and will be probably better off in his state of domestication under the beneficent rule of the machines than he is in his present wild state. We treat our horses, dogs, cattle and sheep, on the whole, with great kindness, we give them whatever experience teaches us to be best for them, and there can be no doubt that our use of meat has added to the happiness of the lower animals far more than it has detracted from it; in like manner it is reasonable to suppose that the machines will treat us kindly, for their existence is as dependent upon ours as ours is upon the lower animals.”

Samuel Butler (1835–1902) novelist

Darwin Among the Machines
The Note-Books of Samuel Butler (1912), Part III - The Germs of Erewhon and of Life and Habit

“Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain.”

Carl Sagan book Shadows of Forgotten Ancestors

"Shadows of Forgotten Ancestors" (1992) (co-written with Ann Druyan)
Context: Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain. A sharp distinction between humans and 'animals' is essential if we are to bend them to our will, make them work for us, wear them, eat them — without any disquieting tinges of guilt or regret. It is unseemly of us, who often behave so unfeelingly toward other animals, to contend that only humans can suffer. The behavior of other animals renders such pretensions specious. They are just too much like us.

“Ants are more like the parts of an animal than entities on their own. They are mobile cells, circulating through a dense connective tissue of other ants in a matrix of twigs. The circuits are so intimately interwoven that the anthill meets all the essential criteria of an organism.”

Lewis Thomas book The Lives of a Cell: Notes of a Biology Watcher

"Antaeus in Manhattan"
The Lives of a Cell: Notes of a Biology Watcher (1974)

“All animals feel Wonder, and many exhibit Curiosity. They sometimes suffer from this latter quality, as when the hunter plays antics and thus attracts them.”

Charles Darwin book The Descent of Man, and Selection in Relation to Sex

volume I, chapter II: "Comparison of the Mental Powers of Man and the Lower Animals", page 42 http://darwin-online.org.uk/content/frameset?pageseq=55&itemID=F937.1&viewtype=image
The Descent of Man (1871)

“People love a happy ending. So every episode, I will explain once again that I don't like people. And then Mal will shoot someone. Someone we like. And their puppy.”

Joss Whedon (1964) American director, writer, and producer for television and film

"This explains Joss perfectly." at Whedonesque.com (15 February 2006)

“Sometimes captured from the great arboreal freedom of their jungle homes, monkeys are closely confined in cages only three or four feet square. … They can never sit or lie down on a flat, soft or yielding surface. Little wonder that by the time they are needed for the knife or the needle they are so crazed or inert that they are no longer representative examples of animal life. Psychologists who study the behaviour of thousands of such creatures annually, rarely make allowances for the fact that their pathetic subjects have been so deprived that they have become more like monsters than animals. Many people who have experienced close affectionate relationships with individuals of other species testify to the considerable potential for emotional and intellectual development that animals have. When properly cared for a pet dog or cat can develop great subtleties of behaviour that the laboratory animal never shows. Those who have been fortunate enough to closely observe unfrightened animals living in the wild are often struck by the complexity and richness of the life they lead. These positive pleasures the laboratory animal never knows; for him the same four white walls and the smell of disinfectant.”

Richard D. Ryder (1940) British psychologist

Experiments on Animals (1971)

“Throughout the history of our ascent to dominance as the master species, our victimization of animals has served as the model and foundation for our victimization of each other. The study of human history reveals the pattern: first, humans exploit and slaughter animals; then, they treat other people like animals and do the same to them.”

Charles Patterson (author) (1935) American author and historian

Source: Eternal Treblinka (2002), p. 109

“As long as Man continues to be the ruthless destroyer of lower living beings, he will never know health or peace. For as long as men massacre animals, they will kill each other. Indeed, he who sows the seed of murder and pain cannot reap joy and love.”

Pythagoras (-585–-495 BC) ancient Greek mathematician and philosopher

Attribution to Pythagoras by Ovid, as quoted in The Extended Circle: A Dictionary of Humane Thought (1985) by Jon Wynne-Tyson, p. 260; also in Vegetarian Times, No. 168 (August 1991), p. 4

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Charles Darwin 161

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