"Authority is not mere power, and it is extremely unhelpful, even dangerous, to confuse the two. When people exert power over others, they compel them, forcefully. They apply the threat of privation or punishment so their subordinates have little choice but to act in a manner contrary to their personal needs, desires, and values. When people wield authority, by contrast, they do so because of their competence—a competence that is spontaneously recognized and appreciated by others, and generally followed willingly, with a certain relief, and with the sense that justice is being served. […]"