C. Wright Mills (August 28, 1916 – March 20, 1962) was an American sociologist, best remembered for studying the structure of power in the U.S. in his book The Power Elite. Mills was concerned with the responsibilities of intellectuals in post-World War II society. He advocated relevance and engagement over disinterested academic observation as a "public intelligence apparatus" in challenging the policies of the institutional elites in the "Three" (the economic, political and military).