A majority of life's errors are caused by forgetting what one is really trying to do.
建筑必须灵活才能持久。
The key to innovation is fostering a culture of continuous improvement.
I've been waiting more than 30 years to say this: "Dad, I always told you I'd come back and get my degree." I want to thank Harvard for this timely honor. I'll be changing my job next year…and it will be nice to finally have a college degree on my resume.
量子理论的发展表明，经典的空间和时间概念不足以在最基本的层面上描述物理世界。
The real challenge lies in making small-scale farmers part of the global solution.
We were both young when I first saw youI close my eyes and the flashback starts?I'm standing there on a balcony in summer air?See the lights， see the party， the ball gowns?
国家是人类社会中最重要的机构，因为它是唯一可以合法使用武力来维持秩序的机构。
