梦想是免费的，但奋斗需要付出代价。

儒家的精髓在于其对道德自我修养的强调。

I try to leave every place a little better than I found it.

User needs always come first, and what we need to do is continuously meet their demands.

The people in my stories are not heroes or villains. They are just people trying to get through life.

The real challenge in computer science is not to write programs, but to understand the nature of computation.

解析：心与物相互感应。