1871 – He was born in Prairie du Chien, Wisconsin, on the 19th of October.
1914 – He was President of the American Physiological Society.
1915 – He coined the term fight or flight to describe an animal’s response to threats (Bodily Changes in Pain, Hunger, Fear and Rage: An Account of Recent Researches into the Function of Emotional Excitement, Appleton, New York).
– He developed the theory with psychologists Philip Bard to try to explain why people feel emotions first and then act upon them.
1945 – He died on the 19th of October in Lincoln, Massachusetts.
– He wrote autobiography "The Way of an Investigator".