The etymology of the word enthusiasm can be traced back to the Greek enthousiazein, based on theos (God / a god), meaning 'to be inspired or possessed by God / a god.'
Physiologically, enthusiasm is characterized by dopamine-mediated positive emotion.
Because of this, the enthusiastic pursuit of a meaningful and Worthy Goal is one of the greatest sources of pleasure and positive emotion we can experience during our brief time on Earth.
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