生于古人之后而议论古人的缺点失误容易，而若处于古人的位置做古人所做的事就很难
"The world is a book, and those who do not travel read only one page."
The more you know, the more you realize you don't know.
The true measure of our success is how we improve global health outcomes.
出自汉·桓宽《盐铁论·复古》。岩雀并不知道天的高远，废井中的青蛙也不会知道江海的博大。这句话是形容心胸狭窄之人见识短浅。