Some Quotes from Mao's Little Red Book

Chapter 2 --- Classes and Class Struggle

Classes struggle, some classes triumph, others are eliminated. Such is history, such is the history of civilization for thousands of years. To interpret history from this viewpoint is historical materialism; standing in opposition to this viewpoint is historical idealism.

In class society everyone lives as a member of a particular class, and every kind of thinking, without exception, is stamped with the brand of a class.

It is up to us to organize the people. As for the reactionaries in China, it is up to us to organize the people to overthrow them. Everything reactionary is the same; if you don't hit it, it won't fall. This is also like sweeping the floor; as a rule, where the broom does not reach, the dust will not vanish of itself.

The enemy will not perish of himself. Neither the Chinese reactionaries nor the aggressive forces of U.S. imperialism in China will step down from the stage of history of their own accord.