"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"
This quote is written / told by Ivan Pavlov between September 14, 1849 and February 27, 1936. He/she was a famous Psychologist from Russia.
The author also have 21 other quotes.
"I was married to Margaret Joan Howe in 1940. Although not a scientist herself she has contributed more to my work than anyone else by providing a peaceful and happy home"