I will not sacrifice even the hind leg of a frog to the kind of social experiment that the Communist government is conducting in Russia.
Я не пожертвую и задней лапой лягушки тому социальному эксперименту, который коммунистическое правительство проводит в России.

Psychologists
Ivan Pavlov
Russian and Soviet physiologist (1849-1936). He won the 1904 Nobel Prize for digestive physiology, and his conditioned reflex became the bedrock on which Watson and Skinner built behaviorism.
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Ivan Pavlov's Other Quotes
A conditioned reflex is a temporary connection between any agent of the external world and a definite activity of the organism.
If you want new ideas, read old books.
Gradualness and discipline. This is the most important thing. From the very beginning of your work, train yourself to the strictest gradualness in accumulating knowledge.
Never think that you already know all. However highly you are appraised, always have the courage to say of yourself: I am ignorant.