The Learning of Dankun, the thought of Dankun is becoming the issues in Korean politics and the evaluation of the Dankun nationalism is the debate of the intellectuals. There is the issues of the historical facts or the symbolic meaning. Therefore the importance of symbolic meaning is very useful conception in Korean people consciousness. Since the Korean Peninsula have divided the two Korea of the North and the South, the Korean people want the unification of Korea. The reverence of Dankun nationalism is the common ideology of the Korean people. That idea is main facts for solving the political problems in the North and the South. In the long history of Korea, the Dankun Nationalism have made in historical life and the life of Korean people. And the main fact of the land. In the international political atmosphere and in the national security and in community. The Dankun national identity have formulated in Korean people. The self-reliance of nationality had a important role in Korean history. The ideological belief system of Dankun identity have been the integration and the reunification of divided Korean peninsula. To give all people and to make the good thing in the people is the idea of Dankun belief system. The foundation of thoughts in Korea learning is in the Dankun spirit. In the modern age, the Dankun Spirit is the energy for the national peril aspect in national security. Especially the rule of Japanese imperialism was overcome by the Dankun belief system. In Korean people the identity have formulated by the one spirit of Dankun Founder. To have the ideal community of our land was the together spirit of nationality in the long history. For the unification of two Koreas, we have to embrace the north Korea people and to aid their living and have common. Dankun mind. Now the world is one, but the manny identities is reality of international relations. The open mind is very important but must not forget Dankun spirit and nationalism. Therefore we can understand the world, and manny countries for their tradition and their historical background. The 21st century is the civilization of manny national identities and their. Belief system. the post figurative culture is the energy for the 21st century. The relationship of international society is base in the historical and cultural identity and the Korean people have to effort to get the flower of our national mind.