你做什么，你就是什么。不是你说什么，不是你相信什么，不是你如何投票，而是你把时间花在什么地方。

最好的想法往往来自那些最接近问题的人。

For the past 33 years， I have looked in the mirror every morning and asked myself: 'If today were the last day of my life， would I want to do what I am about to do today？' And whenever the answer has been 'No' for too many days in a row， I know I need to change something.

Sustainability isn't an option; it's a responsibility we owe to future generations.

The individual is the only reality. The further we move away from the individual, the more abstract and unreal we become.