In his earliest agitations Sun Yat-sen was opposed to the Manchus.(57) In this connection he developed a peculiar and interesting theory concerning nationalism. He held, briefly, that the Chinese had, at the noon-day glory of their Empire, fallen under the lure of a cosmopolitanism which was not in accord with the realities of political existence. It was this lack of distinction between themselves and outsiders which had permitted hundreds of millions of Chinese to fall prey to one hundred thousand Manchus in the early seventeenth century,(58) with the consequence that the Manchus, once on the throne of China, made every effort to erase their barbarian origin from the minds of the Chinese, and, with this end in view, did everything possible, as modern Japan is doing in Korea, to destroy the national consciousness of the Chinese.(59) China, to Sun Yat-sen, had always been a nation, but its inhabitants did not believe it a nation. They had lost the precious treasure of nationalism. Without contradicting Sun Yat-sen, but differing from him only in the use of words, Westerners might say that the Chinese had once known nationalism as members of the antique Chinese states, but had later formed—in the place of a nation—a cosmopolitan society which comprehended the civilized world of Eastern Asia.(60) Sun Yat-sen did not blame Confucius for cosmopolitanism. There is, indeed, nowhere in his works the implication that Confucianism was an evil in itself, deserving destruction; why then did Sun Yat-sen believe that, even though the old ideology was not invalid for the organization of China internally, the old world-view had broken down as an effective instrument for the preservation of China? First of all, Sun stated, in terms more general than did the ancients, the necessity of establishing the ideology on the basis of pragmatism. He stated: We cannot say in general that ideas, as ideas, are good or bad. We must judge whether, when put into practice, they prove useful to us or not. If they are of practical value to us, they are good; if they are impractical, they are bad. If they are useful to the world, they are good; if they are not useful to the world, they are not good.(61)