Efficiency is doing things right; effectiveness is doing the right things.
一切都在流动，一切都在变化，没有永恒不变的东西。
Liberty cannot be preserved without a general knowledge among the people.
In the stock market, the most important thing is not to predict the future, but to understand the present.
Good market design aligns individual incentives with social efficiency.
Sustainability isn't just a trend; it's our responsibility to the future.