War is the highest form of struggle for resolving contradictions, when they have developed to a certain stage, between classes, nations, states, or political groups, and it has existed ever since the emergence of private property and of classes.
Mao ZedongIt will take a long period to decide the issue in the ideological struggle between socialism and capitalism in our country. The reason is that the influence of the bourgeoisie and of the intellectuals who come from the old society will remain in our country for a long time to come, and so will their class ideology. If this is not sufficiently understood, or is not understood at all, the gravest mistakes will be made and the necessity of waging the struggle in the ideological field will be ignored.
Mao Zedong