We are at a unique stage in our history. Never before have we had such an awareness of what we are doing to the planet, and never before have we had the power to do something about it.

从长远来看，创新是获胜的唯一途径。

自己不能胜任的事，切勿轻易答应别人;既经允诺，就必须实践自己的诺言。

短期收益不应损害长期可持续性。