Beauty is how you feel inside and it reflects in your eyes. It is not something physical.

Every year of delay makes the problem harder to solve.

There are some things so serious you have to laugh at them.

弦理论的数学美感表明它必须是自然界终极描述的一部分。

成功很酷，但忠诚才是王道。

所以，国家的钱财不足以来应付饥荒，救济孤儿寡妇，这样，国家就贫困，百姓就难于治理。 

The greatest reward in research is knowing that your work can save lives.