The future of life on Earth depends on our ability to take action. Many individuals are doing what they can, but real success can only come if there is a change in our societies and our economics and in our politics.

种树的最佳时间是20年前，第二好的时间是现在。

最终，爱才是最重要的。

抽象是管理软件系统复杂性的关键。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

真正的领导者倾听多于发言，并以诚信为首要行动准则。