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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
Related Quotes
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
Act
Clear
Determines
Physiology has, at last, gained control over the nerves which stimulate the gastric glands and the pancreas.
— Ivan Pavlov
Control
Gained
Glands
Don't become a mere recorder of facts, but try to penetrate the mystery of their origin.
— Ivan Pavlov
Become
Facts
Mere
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
Conclusive
Condition
Course
The gastric laboratory uses its protein ferment under an acid reaction.
— Ivan Pavlov
Acid
Laboratory
Protein