复杂性理论告诉我们，并非所有问题都是平等的；有些问题本质上比其他问题更难。
The future belongs to those who understand that doing more with less is compassionate, prosperous, and enduring.
Leadership means making tough decisions with compassion and clarity.
解析：知道自己还有所不知，这是很高明的。不知道却自以为知道，这就是很糟糕的。
我们生活在一个过去总是存在，未来总是不确定的世界中。
The only way to truly understand someone is to listen to them without judgment.
在任何比赛中，自信是关键，但你必须用实力来支撑它。
数学的本质在于它的自由。
We live in a world where the past is always present.