数学证明的美在于它的简洁性和必然性。

The essence of mathematics lies in its freedom.

在顺丰，我们不仅提供快递服务，更提供一种信任和安心。

"The most common way people give up their power is by thinking they don't have any."

人生像一匹马，你不驾驭它，它便驾驭你。