“Some of our greatest ideas, art, and inventions—from the theory of evolution to van Gogh’s sunflowers to the personal computer—came from quiet and cerebral people who knew how to tune in to their inner worlds and the treasures to be found there. Without introverts, the world would be devoid of: the theory of gravity the theory of relativity W. B. Yeats’s “The Second Coming” Chopin’s nocturnes Proust’s In Search of Lost Time Peter Pan Orwell’s Nineteen Eighty-Four and Animal Farm The Cat in the Hat Charlie Brown Schindler’s List, E.T., and Close Encounters of the Third Kind Google Harry Potter* As”