His works contain the precious truth he found in the course of weathering the tempest of modern history after embarking on the road of revolution in his early years.

The works systematically reflect the lines and policies set forth by the President in each period and at each stage of the developing revolution and comprehensively deal with theoretical and practical issues in all fields.

In his works the President scientifically clarified the philosophical principle of the Juche idea and the need to firmly establish Juche in the revolution and construction and maintain the independent and creative stand.

The works deal with the issues arising in strengthening the Party and enhancing its role, the issues arising in the economic construction and the building of national defence and the issue arising in the struggle for realizing the cause of global independence.

During the whole period of his revolutionary leadership, the President went among ordinary people to have talks with them and listen to their simple opinions and found perfect solutions to the issues required by the revolutionary practice, leaving them on his immortal works.

The immortal works published by him while leading the Korean revolution to victory in the long period indicate the immutable principles and all-round ways of having eternal vitality.

Indeed, his sacred life was a brilliant one of an extraordinary thinker-theoretician, prominent statesman and great revolutionary who performed great feats before the times and mankind through his energetic ideological and theoretical activities.