我们必须停止空谈改变，开始行动。

我已经不再年轻，不再知道一切。

The companies that will thrive are those that see climate challenge as an opportunity for reinvention.

世界上最美丽的东西是真理。

The joy of mathematics comes from the act of creation, not just the result.

简单不是缺乏复杂，而是对复杂的解决。