复杂性是执行力的敌人——保持解决方案简单。

反过来，始终反过来：把情况或问题颠倒过来，从反面看。

"The only thing that could spoil a day was people. People were always the limiters of happiness except for the very few that were as good as spring itself."

The art of economics lies in understanding the subtle interactions between rules and behavior.

你必须愿意失败，愿意犯错，愿意看起来愚蠢。

穷人不是不想储蓄，而是没有能力储蓄。