当我们有目的地疏伐森林时，我们不是在夺走生命，而是在为更多生命的繁荣腾出空间。
When we thin forests with purpose, we're not taking away life—we're making room for more life to flourish.
A man is the sum of his misfortunes. One day you'd think misfortune would get tired but then time is your misfortune.
Why do I stand up here? I stand upon my desk...to remind myself that we must constantly look at things in a different way.
Every book is a journey.
The galactic center is a unique natural experiment in strong gravity.