现在是过去的未来。

解释：往往在你觉得是轻而易举的时候，困难也就跟着来了。

进步的概念与灾难的概念不可分割。

Every seed we plant today is a promise to future generations.

Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.

真相很少是纯粹的，也从不简单。