情感不仅仅是反应；它们是我们最深层次需求和欲望的有力指标。

我们都是自己经历的囚徒。

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

数学中最重要的是理解概念，而不仅仅是记忆公式。