变化带来机遇。另一方面，变化可能让人迷茫。

The joy of solving a mathematical problem is unparalleled; it is a moment of pure intellectual triumph.

Our greatest natural resource is the minds of our children.

我不相信永恒，但我相信痕迹。

The self is not a solid thing but a collection of echoes.

你就是上帝，你的想象力是神圣的。