The difference between an ordeal and an adventure is your attitude.

The reality is: sometimes you lose. And you’re never too good to lose. You’re never too big to lose. You’re never too smart to lose. It happens.

引自孟德斯鸠，刘凯湘在《民法总论》中引用并阐释其意义

历史是一个庞大的预警系统。