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。 - Mao Zedong

The unification of our country, the unity of our people and the unity of our various nationalities — these are the basic guarantees for the sure triumph of our cause. However, this does not mean that contradictions no longer exist in our society. To imagine that none exist is a naive idea which is at variance with objective reality. We are confronted with two types of social contradictions — those between ourselves and the enemy and those among the people. The two are totally different in nature.

Over a long period we have developed this concept for the struggle against the enemy: strategically we should despise all our enemies, but tactically we should take them all seriously. This also means that we must despise the enemy with respect to the whole, but that we must take him seriously with respect to each and every concrete question. If we do not despise the enemy with respect to the whole, we shall be committing the error of opportunism. Marx and Engels were only two individuals, and yet in those early days they already declared that capitalism would be overthrown throughout the world. But in dealing with concrete problems and particular enemies we shall be committing the error of adventurism unless we take them seriously. In war, battles can only be fought one by one and the enemy forces can only be destroyed one by one. Factories can only be built one by one. The peasants can only plow the land plot by plot. The same is even true of eating a meal. Strategically, we take the eating of a meal lightly—we know we can finish it. But actually we eat it mouthful by mouthful. It is impossible to swallow an entire banquet in one gulp. This is known as a piecemeal solution. In military parlance, it is called wiping out the enemy forces one by one.

Opposition and struggle between ideas of different kinds constantly occur within the Party; this is a reflection within the Party of contradictions between classes and between the new and the old in society. If there were no contradictions in the Party and no ideological struggles to resolve them, the Party's life would come to an end.