The inimitable Korean Central News Agency of the Democratic People's Republic of Korea, on the "gifted thinker and theoretician" Kim Jong Il, who has "glorified the revolutionary idea of President Kim Il Sung as the eternal guiding idea of the era of independence with his outstanding ideological and theoretical activities":
In the course of a comprehensive analysis and review of the hundred year-long history of the development of the revolutionary theories of the working class, he clarified their limitations and gave an scientific and theoretical verification of the originality of the President's revolutionary idea which cannot be measured or construed by the yardsticks of preceding theories and the world-historic position of the idea which reflects the demand of the era of independence and desire of the people and holds the highest place in the history of human thoughts.
At the national seminar of party information workers on February 19, Juche 63 (1974), he formulated the revolutionary idea of the President with profound logics and classic propositions, associating it with the august name of the President, and declared the program of modeling the whole society on the Juche idea. This was a historic milestone in definitely placing the revolutionary idea of the President in the position of the guiding idea of the era of independence.
Kim Jong Il has made public a lot of famous works including "On the Juche Idea," "The Juche Philosophy Is an Original Revolutionary Philosophy," "Socialism Is a Science" and "The Songun Revolutionary Line Is a Great Revolutionary Line of Our Times and the Ever-Victorious Banner of Our Revolution" to further develop and enrich the revolutionary idea of the President with new principles and contents.
Today, the revolutionary idea of the President is highly praised by progressive humankind as the perfect guiding idea, theory and method of our times and is giving a powerful impetus to the human cause of independence in the 21st century.
There's nothing really to add to that.