In 1897, the French sociologist Émile Durkheim—perhaps the most profound thinker about the nature of society—wrote a book about the social causes of suicide. Drawing on data that was just becoming available as governments began to keep statistics, he noted that in Europe the general rule was that the more tightly people are bound into a community that has the moral authority to restrain their desires, the less likely they are to kill themselves. A central concept for Durkheim was anomie, or normlessness—an absence of stable and widely shared norms and rules. Durkheim was concerned that
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