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.
-- Ivan Pavlov
   
Ivan Pavlov   Name:
Ivan Pavlov
Type:
Psychologist
Nationality:
Russian
Birth:
September 14, 1849
Death:
February 27, 1936
https://www.nutquote.com/quote/Ivan_Pavlov