This chapter assesses the domestic sources of contemporary China’s foreign policy. In particular, it examines the importance of national identities, China’s worldviews, the socialization of Chinese, and particularly the role of nationalism. The chapter begins by arguing that social influences matter: the CCP has inextricably linked itself, society, and foreign policy by staking its domestic right to rule upon its foreign policy performance. The chapter then turns to the thorny empirical question of what we know about Chinese feelings and attitudes toward different parts of the world, from China’s Asian neighbors, to the admired and resented Euro-American First World, to Russia, and the dark and backwards Third World of Africa and Latin America. It then turns to the causes/drivers of these worldviews, arguing that both demographics (e.g., age and location) and individual predispositions (e.g., nationalism and cosmopolitanism) matter, but that political and peer socialization has a powerful constraining effect on the international attitudes of the Chinese people.