The Juche Idea (also Juche Sasang or Chuch'e; pronounced /tɕutɕʰe/ in Korean, approximately "joo-cheh") is the official state ideology of North Korea and the political system based on it. Kim Jong-il has explained that the doctrine is a component part of Kimilsungism, after its founder Kim Il-sung. The core principle of the Juche ideology since the 1970s has been that "man is the master of everything and decides everything". The official biography Kim Il Sung by Baik Bong had previously described this as saying that the masters of the North Korean revolution are the Korean people, who must remake themselves under the leadership of the Workers' Party of Korea. Juche literally means "main body" or "subject"; it has also been translated in North Korean sources as "independent stand" and the "spirit of self-reliance".