His work "On Preserving the Juche Character and National Character of the Revolution and Construction" which was issued on June 19, Juche 86 (1997) contains the idea that it is the fundamental principle which should be maintained in accomplishing socialist cause to preserve the Juche character and the national character, and tasks and ways for it.

His work "The Juche Philosophy Is an Original Revolutionary Philosophy", issued on July 26, 1996, clearly indicates the idea that the Juche philosophy is an original one that has been developed and systemized with its original principles, and a revolutionary and popular one that truly serves the people in their struggle for independence.

"Let Us Firmly Arm Ourselves with the Juche-Oriented Theory of Socialist Economic Management", which was issued on July 1, 1991, clearly expounds the basic principle, system and ways of socialist economic management.