His theory on the single-minded unity was derived from the noble outlook on the leader, the view that a leader plays a decisive role in making revolution and the leader founds a party and rallies the popular masses around it.

With this unity as a mainstay in leading the nation, he overcame all difficulties, turning adversity into favorable conditions.

Regarding the unity of whole society as an invincible weapon in the revolutionary struggle, Kim Jong Il worked heart and soul to further cement this unity on the basis of absolute trust in the popular masses.

He set forth the slogan "Let us build new society with trust and love" as guidelines for the Workers' Party of Korea, stressing that trust brings unity but distrust brings betrayal or division.

Inspired by his lofty idea on unity, the DPRK people are now upholding the leadership of respected Marshal Kim Jong Un with loyalty, closely rallied around him.