可持续性不是一种选择，而是我们对下一代的责任。
Sustainability is not an option—it's a responsibility we owe to the next generation.
The world is a place of chaos and confusion, and the only way to make sense of it is to find your own path through it.
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。