可持续性不是一种选择；它是我们星球未来的必需品。

我坚信这个理论：你付出多少就会得到多少。

Your work begins, work that will not be always joyful to you, labor that may not always fulfill you and days that will seem like one damn thing after the other.

The poor are not irrational; they are just as rational as anyone else, but they operate under very different constraints.

质量不是希望；它是一种结果。