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The only way to learn mathematics is to do mathematics.
I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.
【释义】社会常把内向病理化,凯根用实验证明:内向气质是大脑独特的生物设定,藏着深度思考与独立创新的宝藏。
"I can resist everything except temptation."