可持续性不是一个选择;它是我们对后代的责任。
领导者真正重要的工作是创造和管理文化。
世界是一个舞台,但剧本选角很糟糕。
Small changes in the environment can have big effects on behavior.
I am not a political person by nature. I don't think that writers are, or should be, political figures.