"Susan Cain, Harvard Law School graduate and author of the culture-shifting bestseller Quiet: The Power of Introverts in a World That Can't Stop Talking, explains, "By their nature, introverts tend to get passionate about one, two or three things in their life . . . [a]nd in the service of their passion for an idea they will go out and build alliances and networks and acquire expertise and do whatever it takes to make it happen." One need not be loud or gregarious to be passionate and effective. In fact, a bit of quiet seems to go a long way toward being present.18 They"