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"I accept extinction as best explaining disjoined species. I see that the same cause must have reduced many species of great range to small, and that it may have reduced large genera to so small, and of families."
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Exlpore more Cause quotes
"Every man is a creative cause of what happens, a primum mobile with an original movement."
"An explanation of cause is not a justification by reason."
"At times one remains faithful to a cause only because its opponents do not cease to be insipid."
"Before the effect one believes in different causes than one does after the effect."
"Magnetism, as you recall from physics class, is a powerful force that causes certain items to be attracted to refrigerators."
"Petroleum is a more likely cause of international conflict than wheat."
Explore more quotes by Asa Gray
"Next it was found that it was physiologically and structurally the same in the plant, that it was the living part of the plant, that which manifested the life and did the work in vegetable as well as in animal organisms."
"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."
"We may take it to be the accepted idea that the Mosaic books were not handed down to us for our instruction in scientific knowledge, and that it is our duty to ground our scientific beliefs upon observation and inference, unmixed with considerations of a different order."
"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."
"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."
"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."
"I know some people who never have any difficulties to speak of. The moment I understood your premisses, I felt sure you had a real foundation to hold on."
"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."
"I proceed with the proper subject of this discourse; namely, the further changes in scientific belief, which have occurred within my own recollection, even since the time when I first aspired to authorship, now forty- five years ago."
"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."
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