The real heroes are the ones who have the courage to say no.

价的概念是理解分子结构的关键。

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

写作是给自己一个活多次生命的机会。

"The ultimate test of a machine learning algorithm is its ability to perform well on new, unseen data."

通过别人的鞋可以了解很多东西，他们从哪儿来，将要到哪儿去。