Changes in society are due chiefly to the development of the internal contradictions in society, that is, the contradiction between the productive forces and the relations of production, the contradiction between classes and the contradiction between the old and the new; it is the development of these contradictions that pushes society forward and gives the impetu6 for the suppression of the old society by the new.
Mao ZedongThe popular masses are like water, and the army is like a fish. How then can it be said that when there is water, a fish will have difficulty in preserving its existence? An army which fails to maintain good discipline gets into opposition with the popular masses, and thus by its own action dries up the water.
Mao ZedongWhen we look at thing, we must examine its essence and treat its appearance merely as an usher at the threshold, we must, once we cross the threshold, grasp the essence of the thing.
Mao ZedongThe People's Liberation Army is always a fighting force. Even after countrywide victory, our army will remain a fighting force during the historical period in which classes have not been abolished in our country and the imperialist system still exists in the world. On this point, there should be no misunderstanding or wavering.
Mao Zedong