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"The best opinion now is, that there are multitudinous forms which are not sufficiently differentiated to be distinctively either plant or animal, while, as respects ordinary plants and animals, the difficulty of laying down a definition has become far greater than ever before."
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"My parents were very permissive when it came to animals. As long as we earned the money to buy them and built whatever structure it was they were going to live in, we could have any kind of pet we wanted. They would have let us have a rhinoceros if we could have afforded it."
"Dogs are not like cats, who amusingly tolerate humans only until someone comes up with a tin opener that can be operated with a paw. Men made dogs, they took wolves and gave them human things--unnecessary intelligence, names, a desire to belong, and a twitching inferiority complex. All dogs dream wolf dreams, and know they're dreaming of biting their Maker. Every dog knows, deep in his heart, that he is a Bad Dog..."
"Reason number 106 why dogs are smarter than humans: once you leave the litter, you sever contact with your mothers."
"Man is the only creature that consumes without producing. He does not give milk, he does not lay eggs, he is too weak to pull the plough, he cannot run fast enough to catch rabbits. Yet he is lord of all the animals."
"The older I get, the more individuality I find in animals and the less I find in humans."
Explore more quotes by Asa Gray
"But it was soon ascertained that this quaternary matter of the animal body was chemically the same in the plant, was elaborated there, and only appropriated by the animal."
"Many years ago it was taught that plants and animals were composed of different materials: plants, of a chemical substance of three elements,- carbon, hydrogen, and oxygen; animals of one of four elements, nitrogen being added to the other three."
"Why is it not just as likely that there were as many small general nearly at first as now, and as great a disproportion in the number of their species?"
"It was implicitly supposed that every living thing was distinctively plant or animal; that there were real and profound differences between the two, if only they could be seized."
"Indeed upon much that may have to say, I expect rather the charitable judgment than the full assent of those whose approbation I could most wish to win."
"There is a class, moreover, by whom all these scientific theories, and more are held as ascertained facts, and as the basis of philosophical inferences which strike at the root of theistic beliefs."
"It was always understood that plants and animals, though completely contrasted in their higher representatives, approached each other very closely in their lower and simpler forms. But they were believed not to blend."
"I am sufficiently convinced already that the members of a profession know their own calling better than anyone else can know it."
"Your candor is worth everything to your cause. It is refreshing to find a person with a new theory who frankly confesses that he finds difficulties, insurmountable, at least for the present."
"The former conviction that these two kingdoms were wholly different in structure, in function, and in kind of life, was not seriously disturbed by the difficulties which the naturalist encountered when he undertook to define them."
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