生活中最好的事情往往是意想不到的。

To say something is to perform an action， and to perform an action is to do something with words.

I am not afraid of death, I just don't want to be there when it happens.

生命中最美的事物是免费的。

创新不是重新发明轮子，而是让轮子转得更顺畅、更快。