If you want to know the taste of a pear, you must change the pear by eating it yourself. If you want to know the theory and methods of revolution, you must take part in revolution. All genuine knowledge originates in direct experience.
Mao ZedongLet's contemplate this, how many people would die if war breaks out. There are 2.7 billion people in the world. One-third could be lost; or, a little more, it could be half... I say that, taking the extreme situation, half dies, half lives, but imperialism would be razed to the ground and the whole world would become socialist.
Mao ZedongThe agricultural co-operative movement has been a severe ideological and political struggle from the very beginning. No cooperative can be established without going through such a struggle. Before a brand-new social system can be built on the site of the old, the site must be swept clean. Invariably, remnants of old ideas reflecting the old system remain in people's minds for a long time, and they do not easily give way. After a co-operative is established, it must go through many more struggles before it can be consolidated. Even then, the moment it relaxes its efforts it may collapse.
Mao Zedong