At the end of the day it's not about what you have or even what you've accomplished... it's about who you've lifted up, who you've made better. It's about what you've given back.

反馈是鲁棒控制系统的关键。

货币政策中的时间不一致性问题出现在政策制定者一旦经济主体根据宣布的政策采取行动后，就有动机偏离该政策。

心之外没有事物，心之外没有事情，心之外没有道理。

文字的力量是巨大的，但它也是脆弱的，容易被滥用。