The actor's job is to understand and express the complexity of human nature.

译文：即使处在平安的环境，也要时刻想到可能会有突如其来的危险。

A good abstraction is one that emphasizes the essential and suppresses the irrelevant.

The best way to predict the future is to create it.

合作而非竞争，才能解决世界最大的环境挑战。