美国垄断资本集团如果坚持推行它的侵略政策和战争政策，势必有一天要被全世界人民处以刑。其他美国帮凶也将是这样。 - Mao Zedong

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

It is necessary not only to study the particular contradiction and the essence determined thereby of every great system of the forms of motion of matter, but also to study the particular contradiction and the essence of each process in the long course of development of each form of motion of matter. In every form of motion, each process of development which is real (and not imaginary) is qualitatively different. Our study must emphasize and start from this point.

Undoubtedly, we must criticize wrong ideas of every description. It certainly would not be right to refrain from criticism, look on while wrong ideas spread unchecked and allow them to dominate the field. Mistakes must be criticized and poisonous weeds fought wherever they crop up. However, such criticism should not be dogmatic, and the metaphysical method should not be used, but instead the effort should be made to apply the dialectical method. What is needed is scientific analysis and convincing argument. Dogmatic criticism settles nothing. We are against poisonous weeds of whatever kind, but we must carefully distinguish between what is really a poisonous weed and what is really a fragrant flower. Together with the masses of the people, we must learn to differentiate carefully between the two and use correct methods to fight the poisonous weeds.