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

解释：以芍药相赠，以文无（一种中药）相招，展现了中药在人际交往中的特殊意义。

I've learned that you can't control everything, but you can control how you react to it.

实现不可能的唯一方法就是相信它是可能的。