Leadership means making tough decisions today that will benefit everyone tomorrow.

    ——日本人想控制上海，想尽一切办法、千方百计对杜月笙进行拉拢，杜月笙如是说。

I think that the role of the mathematician is to discover these patterns and to explain them.

没有什么比一个人的想法更危险的了。

柠檬问题发生的原因是卖家比买家更了解产品，从而导致市场失灵。