每个实验都会破坏其开始时的某些条件。

"To live is to choose, but to choose well, you must know who you are and what you stand for."

"We are all connected by the stories we share."

Success is not about the money, it's about the happiness.

世界是一本书，不旅行的人只读了一页。

主要的义务规则是那些要求或禁止某些行为的规则。