医学的进步不仅仅是技术问题，更是人性的体现。

我所使用的材料不仅仅是物体，它们是意义的载体。

We must mine coal responsibly today so that our children inherit both energy security and a healthy environment.

写书就像冒险。一开始它是玩具和娱乐。然后她成了你的情妇。然后是你的主人。然后变成一个暴君。最后你终于认命的时候,它死了,然后给拖到外面游街。

意识的元素是心理学的终极数据。

No president who performs his duties faithfully and conscientiously can have any leisure.

"A good book is a friend that never lets you down."

改革需要勇气，但更需要智慧。