可持续性不仅仅是一个选择；这是我们对后代的责任。

Sustainability isn't an option—it's a necessity if we want to feed a growing population without destroying our planet.

I’m positive that in 100 years much of what I take to be true today will be proved to be wrong， maybe even embarrassingly wrong， and I try really hard to identify what it is that I am wrong about today.

Human beings are not born once and for all on the day their mothers give birth to them, but life obliges them over and over again to give birth to themselves.