Korean schoolchildren in North and South learn that Japan invaded their fiercely patriotic country in 1905, spent forty years trying to destroy its language and culture, and withdrew without having made any significant headway. This version of history is just as uncritically accepted by most foreigners who write about Korea. Yet the truth is more complex. For much of the country's long history its northern border was fluid and the national identities of literate Koreans and Chinese mutually indistinguishable. Believing their civilization to have been founded by a Chinese sage in China's image, educated Koreans subscribed to a Confucian worldview that posited their country in a position of permanent subservience to the Middle Kingdom. Even when Korea isolated itself from the mainland in the seventeenth century, it did so in the conviction that it was guarding Chinese tradition better than the Chinese themselves. For all their xenophobia, the Koreans were no nationalists.