The true value of a forest cannot be measured in board feet, but in the breath of the planet.

化学之美在于它能够在分子水平上解释世界。

I have learnt how to live... how to be in the world and of the world, and not just to stand aside and watch.

我总是说，“如果你时刻准备着，就不需要临时准备。”

The best time to plant a tree was twenty years ago. The second best time is now.

We must accept that quantum objects do not possess properties independent of measurement.