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。

"The true measure of a scientist's worth is not in the accolades received, but in the impact of their work on the world."

The stock market is a voting machine in the short term, but a weighing machine in the long term.

"The power of a story is in its ability to inspire creativity."

数学不仅仅是人类的发明；它具有一种独立于我们而存在的深刻现实。