The historian is a prophet looking backwards.

Change is the essence of life. Be willing to surrender what you are for what you could become.

你唯一应该努力超越的人就是昨天的自己。

心理活动是有机体与世界互动的方式。

In the short run, the market is a voting machine but in the long run, it is a weighing machine.

生命中最美丽的东西不是事物，而是瞬间。