"The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember."

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

今天很残酷，明天更残酷，后天很美好，但绝对大部分是死在明天晚上，所以每个人不要放弃今天。

We must listen to what the models are telling us, even when the message is uncomfortable.

"The world is a book, and those who do not travel read only one page."