The Hoover Institution (officially The Hoover Institution on War, Revolution, and Peace) is an American public policy think tank which promotes personal and economic liberty, free enterprise, and limited government. While the institution is formally a unit of Stanford University, it maintains an independent board of overseers and relies on its own income and donations. It is widely described as conservative, although its directors have contested the idea that it is partisan.The institution began in 1919 as a library founded by Stanford alumnus Herbert Hoover prior to his presidency in order to house his archives gathered during the Great War. The well-known Hoover Tower was built to house the archives, then known as the Hoover War Collection (now the Hoover Institution Library and Archives), and contained material related to World War I, World War II, and other global events. The collection was renamed and transformed into a research institution ("think tank") during the mid-20th century. Its mission, as described by Herbert Hoover in 1959, is "to recall the voice of experience against the making of war, and by the study of these records and their publication, to recall man's endeavors to make and preserve peace, and to sustain for America the safeguards of the American way of life."It has staffed numerous jobs in Washington for Republican presidents from Richard Nixon to Donald Trump. It has provided work for people who previously had important government jobs. Notable Hoover fellows and alumni include Nobel Prize laureates Henry Kissinger, Milton Friedman, and Gary Becker; economist Thomas Sowell; scholars Niall Ferguson and Richard Epstein; former Speaker of the House of Representatives Newt Gingrich; and former Secretary of Defense James N. Mattis. In 2020, former Secretary of State Condoleezza Rice became the institution's director. It divides its fellows into separate research teams to work on various subjects, including Economic Policy, History, Education, and Law. It publishes research by its own university press, the Hoover Institution Press.In 2021, Hoover was ranked as the 10th most influential think tank in the world by Academic Influence. It was ranked 22nd on the "Top Think Tanks in United States" and 1st on the "Top Think Tanks to Look Out For" lists of the Think Tanks and Civil Societies Program that same year. Source: Wikipedia (en)