"Never think that you already know all. However highly you are appraised, always have the courage to say to yourself-I am ignorant."
"Finally, as the digestive canal is a complex system, a series of separate chemical laboratories, I cut the connections between them in order to investigate the course of phenomena in each particular laboratory; thus I resolved the digestive canal into several separate parts."
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Source: Ivan Petrovich Pavlov (1957). “Experimental psychology, and other essays”
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