动作发展应该是心理高层次的表现或反映，这是修理合乎自然发展逻辑的。

I'm not afraid of dying, I'm afraid of not trying.

In the realm of computational complexity, every problem is a universe waiting to be explored.

I like crossing the imaginary boundaries people set up between different fields—it's very refreshing.

I believe in the power of dreams.

伽罗瓦表示的研究证明了代数方法的力量。