主要的义务规则是那些要求或禁止某些行为的规则。
A company’s greatest asset is its people—invest in them.
我在网球上取得的成就是伟大的，但我作为一个人是谁更重要。
"The key to long-term success is not just about making the right decisions, but also about learning from the wrong ones."
I decided, very early on, just to accept life unconditionally; I never expected it to do anything special for me, yet I seemed to accomplish far more than I had ever hoped. Most of the time it just happened to me without my ever seeking it.