革命道德不是从天上掉下来的。它是在日常斗争中培养，在革命活动中锤炼的。
NP-completeness is not just a theoretical curiosity; it has profound implications for practical computing.
智者云：“话说出口之前，请三省自问。第一层自问，“信息是否为真？”，第二层自问：“有必要说么？”第三层自问：“是出于善意的么？”
我不是英雄，我不是反派，我只是黑暗中的一个声音。
改变是好事。
Experimental physics has the last word in deciding between competing interpretations of quantum theory.
A problem is not solved by mechanically applying past experience, but by restructuring the situation.