Sumner, William Graham

William Graham Sumner (1840–1910) was an influential American sociologist, economist, and public intellectual who helped shape early social science in the United States, while also promoting ideas that later drew sustained criticism. A longtime professor at Yale University, Sumner argued for classical liberalism, free markets, and minimal government intervention. He became closely associated with Social Darwinist thinking, contending that social inequality and economic struggle were natural and even necessary outcomes of competition. Critics have noted that these views tended to justify poverty, weaken arguments for social reform, and overlook the structural forces—such as industrial capitalism, inherited privilege, and racial exclusion—that shaped opportunity in the late nineteenth century. Despite these controversies, Sumner’s scholarly work, especially Folkways (1906), remains influential for its analysis of social norms and its role in establishing sociology as a formal academic discipline.

In December 1909 Sumner had a stroke at the Murray Hill Hotel. After falling ill, Sumner moved in to his son Graham's house on Linden Avenue in Englewood. He died in April 1910 in Graham's home.

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