Time is what keeps everything from happening at once.

We can say things with words； and we can do things with words.

做数学的艺术在于找到那个包含所有普遍性萌芽的特殊案例。

Time is money, don't waste it.

Our culture is not just something we carry in our hearts; it is the very fabric of our existence.

给自己倒一杯饮料，涂上口红，振作起来。