In the wild, there are no second chances. You have to get it right the first time.
It is a common experience that a problem difficult at night is resolved in the morning after the committee of sleep has worked on it.
比起知识本身,我对能用知识做什么更感兴趣。
——从浙江观潮返上海后题词,1916年9月15日
唤醒天才的是困难。