“The fundamental contradiction in the process of development of a thing and the essence of the process determined by this fundamental contradiction will not disappear until the process is completed; but in a lengthy process the conditions usually differ at each stage. The reason is that, although the nature of the fundamental contradiction in the process of development of a thing and the essence of the process remain unchanged, the fundamental contradiction becomes more and more intensified as it passes fr om one stage to another in the lengthy process. In addition, among the numerous major and minor contradictions which are determined or influenced by the fundamental contradiction, some become more intense, some are temporarily or partially resolved or mitigated, and some new ones emerge: hence the process is marked by stages. If people do not pay attention to the stages in the process of development of a thing, they cannot deal with its contradictions properly.” -Mao Tse Tung
Download: Mao On Practice and Contradiction
Aklatang Bayan 