拿古代的情况作标准来看今天的事情，这是对今天不正确的看法；拿今天的情况要求古人，这是不正确的历史观。此言时代不同，社会情况就会不同，因此考察古今，论定古今人物或事件，都不能持相同的标准，而必须结合不同情势具体对待。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

Fear does not prevent death. It prevents life.

mRNA technology is just the beginning; the potential for medical applications is limitless.