Children are the masters of the new society. - Mao Zedong

要使文艺很好地成为整个革命机器的一个组成部分，作为团结人民、教育人民、打击敌人、消灭敌人的有力的武器，帮助人民同心同德地和敌人作斗争。

历史上的战争分为两类，一类是正义的，一类是非正义的。一切进步的战争都是正义的，一切阻碍进步的战争都是非正义的。我们共产党人反对一切阻碍进步的非正义的战争，但是不反对进步的正义的战争。对于后一类战争，我们共产党人不但不反对，而且积极地参加。前一类战争，例如第一次世界大战，双方都是为着帝国主义利益而战，所以全世界的共产党人坚决地反对那一次战争。反对的方法，在战争未爆发前，极力阻止其爆发；既爆发后，只要有可能，就用战争反对战争，用正义战争反对非正义战争。

According to materialist dialectics, changes in nature are due chiefly to the development of the internal contradictions in nature. Changes in society are due chiefly to the development of the internal contradictions in society, that is, the contradiction between the productive forces and the relations of production, the contradiction between classes and the contradiction between the old and the new; it is the development of these contradictions that pushes society forward and gives the impetus for the supersession of the old society by the new. Does materialist dialectics exclude external causes? Not at all. It holds that external causes are the condition of change and internal causes are the basis of change, and that external causes become operative through internal causes. In a suitable temperature an egg changes into a chicken, but no temperature can change a stone into a chicken, because each has a different basis. There is constant interaction between the peoples of different countries. In the era of capitalism, and especially in the era of imperialism and proletarian revolution, the interaction and mutual impact of different countries in the political, economic and cultural spheres are extremely great. The October Socialist Revolution ushered in a new epoch in world history as well as in Russian history. It exerted influence on internal changes in the other countries in the world and, similarly and in a particularly profound way, on internal changes in China. These changes, however, were effected through the inner laws of development of these countries, China included. In battle, one army is victorious and the other is defeated, both the victory and the defeat are determined by internal causes.