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Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air. Facts are the air of science. Without them a man of science can never rise.

Ivan Pavlov

Ivan Pavlov

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From the described experiment it is clear that the mere act of eating, the food even not reaching the stomach, determines the stimulation of the gastric glands.
— Ivan Pavlov
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Physiology has, at last, gained control over the nerves which stimulate the gastric glands and the pancreas.
— Ivan Pavlov
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Don't become a mere recorder of facts, but try to penetrate the mystery of their origin.
— Ivan Pavlov
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Only by observing this condition would the results of our work be regarded as fully conclusive and as having elucidated the normal course of the phenomena.
— Ivan Pavlov
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The gastric laboratory uses its protein ferment under an acid reaction.
— Ivan Pavlov
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