We moved from what cultural historians call a culture of character to a culture of personality. During the culture of character, what was important was the good deeds that you performed when nobody was looking. … But at the turn of the (20th) century, when we moved into this culture of personality, suddenly what was admired was to be magnetic and charismatic.
Cornish, Audie (interviewer), "Quiet, Please: Unleashing 'The Power Of Introverts'," NPR, January 30, 2012.