We shall never prevent the abuse of power if we are not prepared to limit power in a way which occasionally may prevent its use for desirable purposes.

Every mathematical problem has a solution; sometimes it just takes time to find it.

边界不是一条线，而是一道伤口。

The most important thing is to be honest with yourself and your audience.

若是有足够的空间，婴儿会爬行去抓取东西。