In a now famous moment during the 2008 presidential primaries, Hillary Clinton fought back tears after an undecided voter asked her how she managed to keep at it, day after day. Above, Clinton responds to a reporter's question about that uncharacteristic display of emotion. Joe Raedle/Getty Images hide caption

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Published in 1968, The Laughing Policeman is the fourth in the Martin Beck detective series by Swedish husband-and-wife team Maj Sjowall and Per Wahloo. hide caption

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A portrait of Pearl S. Buck taken during the 1920s, during the time she lived in Nanking. As a child, she lived in a small Chinese village called Zhenjiang. Hulton Archive/Getty Images hide caption

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