There are two kinds of people in the world, whom we might dub the jobholders and the enthusiasts. ...The majority of the kings and emperors were jobh… - George Sarton

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There are two kinds of people in the world, whom we might dub the jobholders and the enthusiasts. ...The majority of the kings and emperors were jobholders and so were many of the popes. ...Most of the creators in the field of art and religion, and many of them in the field of science, were enthusiasts. Now economic conditions may deeply affect the jobs and the jobholders, but they make little impression on the enthusiasts. ...the jobholders ...keep things going with enough continuity and smoothness; they are the builders of usages and customs, the defenders of morality and justice. ...the enthusiasts ...are the main instruments of change and progress; they are the real creators and troublemakers. The enthusiasts are the salt of the earth, but man cannot live by salt alone.