生活中你必须无所畏惧。

写作是我们最接近魔法的事物。

Sustainability isn't an option; it's a responsibility we owe to future generations.

伟大的传记应该像一幅肖像，既能捕捉光明也能捕捉阴影。

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。