决定性的十年：为什么你的二十岁很重要——以及如何充分利用它们。

The most important thing in mathematics is to understand the concepts, not just to memorize formulas.

"The key to great acting is listening. It's not just about saying your lines, it's about hearing what the other person is saying."

义理（思想内容）、考据（文献考证）、辞章（文辞表达）三者缺一不可。

数学的研究是所有智力和精神发展的不可或缺的基础。