The more a person limits himself, the more resourceful he becomes.
解释:第一次击鼓能振作士兵们的勇气,第二次击鼓可以使士兵们的勇气低落,第三次击鼓士兵们的勇气就消失了。
It's not always necessary to be better than everyone else, but to be better than you used to be.