There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.

最大的残疾是坏的态度。

诗歌是一面映照灵魂的镜子。

动态规划理论基于最优性原理，该原理指出，无论初始状态和初始决策如何，剩余决策必须构成关于第一个决策所导致状态的最优策略。