Susan Cain

At least one-third of the people we know are introverts. They are the ones who prefer listening to speaking, reading to partying; who innovate and create but dislike self-promotion; who favor working on their own over brainstorming in teams. Although they are often labeled "quiet," it is to introverts that we owe many of the great contributions to society–from van Gogh’s sunflowers to the invention of the personal computer.