你不能靠一厢情愿的想法来为一个国家提供动力。
The key to successful investing is to have a long-term perspective.
释义：打仗时所谓的“奇招”就是攻击敌人没有准备的位置，在敌人没有预料到的时候采取行动。利用敌人的疏忽和意外来达到制胜的效果。
I don't like debt. Companies with a lot of debt are riskier.
The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
The P versus NP problem is one of the most important unsolved problems in computer science.