我们不必比别人更聪明,但必须比别人更有纪律性。
The busy have no time for tears.
In the end, it is not the answers that matter, but the questions we ask, the journey we take, the search for truth.
解释:货卖完了才知道不足,是由于不懂得计量;事情结束了才知道有余,是由于不懂得调节。