美联储对金融危机的回应实际上是经典的最后贷款人操作，根据危机的规模进行了调整。

在算法的领域，优雅不仅仅是美学；它常常带来效率。

Optimists tend to interpret their troubles as transient, controllable, and specific to one situation. Pessimists, on the other hand, believe that their troubles last forever, undermine everything they do, and are uncontrollable.

生命是用来消耗的，不是用来储蓄的。