Ivan Pavlov died today – 72 years ago

Physiologist and psychologist Ivan Petrovich Pavlov was born on September 14, 1849 in Ryazan, Russia. He said, “It is clear to all that the animal organism is a highly complex system consisting of an almost infinite series of parts connected both with one another and, as a total complex, with the surrounding world, with which it is in a state of equilibrium." [I doubt that “equilibrium” thing.]... Mr. Pavlov died on February 27, 1936 in Leningrad, Soviet Union.