It is necessary to master Marxist theory and apply it, master it for the sole purpose of applying it. If you can apply the Marxist-Leninist viewpoint in elucidating one or two practical problems, you should be commended and credited with some achievement.
Mao ZedongWe can learn what we did not know. We are not only good at destroying the Old World, we are also good at building the new.
Mao ZedongOur enemies are all those in league with imperialism - the warlords, the bureaucrats, the comprador class, the big Landlord class and the reactionary section of the intelligentsia attached to them. The leading force in our revolution is the industrial proletariat. Our closest friends are the entire semi-proletariat and petty bourgeoisie. As for the vacillating middle bourgeoisie, their right wing may become our enemy and their left wing may become our friend - but we must be constantly on our guard and not let them create confusion within our ranks.
Mao ZedongIt 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 do not hit it, it will not fall. This is also like sweeping the floor; as a rule, where the broom does not reach, the dust will not vanish of itself.
Mao Zedong