If you want to know the internal contradictions of a thing you must take part in the practice of changing it.
为了认识事物的内部矛盾,不能不参加变革事物的实践。

Politicians
Mao Zedong
Founder of the PRC and first CCP Chairman (1893-1976). A Hunan peasant who co-founded the Party in 1921, he proclaimed the People's Republic in 1949 — and presided over the Great Leap and Cultural Revolution.
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Mao Zedong's Other Quotes
Political power grows out of the barrel of a gun.
Women hold up half the sky.
Bombard the Headquarters — my big-character poster.
A revolution is not a dinner party, or writing an essay, or painting a picture, or doing embroidery. It cannot be so refined, so leisurely and gentle, so temperate, kind, courteous, restrained and magnanimous. A revolution is an insurrection, an act of violence by which one class overthrows another.
Related Quotes
Act as if what you do makes a difference. It does.
-- William James
You must learn all things: both the steadfast heart of well-rounded Truth and the opinions of mortals, in which there is no true trust.
-- Parmenides
For thinking and Being are the same.
-- Parmenides
Think on the shop floor; act on the shop floor.
-- Sakichi Toyoda
Waste no more time arguing about what a good man should be. Be one.
-- Marcus Aurelius
Those who understand that things arise dependently know them to be empty.
-- Nagarjuna