Ever since the monster of imperialism came into being, the affairs of the world have become so closely interwoven that it is impossible to separate t… - Mao Zedong

Hence, if in any process there are a number of contradictions, one of them must be the principal contradiction playing the leading and decisive role, while the rest occupy a secondary and subordinate position. Therefore, in studying any complex process in which there are two or more contradictions, we must devote every effort to funding its principal contradiction. Once this principal contradiction is grasped, all problems can be readily solved. This is the method Marx taught us in his study of capitalist society. Likewise Lenin and Stalin taught us this method when they studied imperialism and the general crisis of capitalism and when they studied the Soviet economy. There are thousands of scholars and men of action who do not understand it, and the result is that, lost in a fog, they are unable to get to the heart of a problem and naturally cannot find a way to resolve its contradictions.

人的社会实践，不限于生产活动一种形式，还有多种其他的形式，阶级斗争，政治生活，科学和艺术的活动，总之社会实际生活的一切领域都是社会的人所参加的。因此，人的认识，在物质生活以外，还从政治生活文化生活中（与物质生活密切联系），在各种不同程度上，知道人和人的各种关系。其中，尤以各种形式的阶级斗争，给予人的认识发展以深刻的影响。在阶级社会中，每一个人都在一定的阶级地位中生活，各种思想无不打上阶级的烙印。

The real war is within us. History is a symptom of our disease.