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自由民主的成功取决于其制度适应变化环境的能力。
The success of liberal democracy depends on the ability of its institutions to adapt to changing circumstances.
Only by mastering core technologies can we remain invincible.
To truly understand the cosmos, we must first understand the smallest particles that make it up.
君子作战虽然布阵,但还是以勇敢为本。 
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.