数学中最美丽的东西是复杂背后的简单思想。

You don't write because you want to say something, you write because you have something to say.

The best investments are those that benefit both people and the planet.

艺术家必须是不可见之物的仆人。

The forest doesn't need us, but we need the forest—this truth should guide every decision we make in forestry.

过去是一个异国；他们在那里做事的方式不同。