Scott David Westerfeld (born May 5, 1963) is an American writer of young adult fiction, best known as the author of the Uglies and the Leviathan series.
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Pain (any pain--emotional, physical, mental) has a message. The information it has about our life can be remarkably specific, but it usually falls into one of two categories: "We would be more alive if we did more of this," and, "Life would be more lovely if we did less of that." Once we get the pain's message, and follow its advice, the pain goes away.