最终，我们只会后悔没有抓住的机会。

Never use a credit card for credit. The only kind of credit， or debt， that is acceptable is debt to acquire something whose exchange value is extremely likely to increase， like in a home. The exchange value of most things diminishes or vanishes the moment you purchase them. Don’t be in debt to losers.

Mathematics is a universal language that transcends cultural and linguistic barriers.

学会阅读是我一生中最重要的事。

写作是为沉默者发声，让不可见的事物显现。