提供上下文，而非控制。

We are all connected through the threads of DNA.

Hope is a good thing, maybe the best of things, and no good thing ever dies.

友谊是人生最珍贵的财富。

A happy person is not a person in a certain set of circumstances, but rather a person with a certain set of attitudes.

I fell asleep reading a dull book and dreamed I kept on reading, so I awoke from sheer boredom.