我们有责任为子孙后代留下一个比我们发现时更好的地球。
We have a responsibility to future generations to leave the planet in better shape than we found it.
The scariest moment is always just before you start.
"The only thing that is truly universal is the human experience."
自由不是做我们想做的事情的权力，而是做我们应该做的事情的权利。
我们必须不断地跳下悬崖，并在下落的过程中长出翅膀。