The primary rules of obligation are those that require or forbid certain actions.
主要的义务规则是那些要求或禁止某些行为的规则。
Time is a concept that is derived from the way we perceive change.
释义：聪明人舍弃短处，发挥长处，以此来取得成功。阐明了扬长避短的重要性。
翻译：机遇稍纵即逝，看到合适的时机却犹豫不前，最终只会留下悔恨，该行动时要果断。
A leader's job isn't to have all the answers, but to ask the right questions.
释义：即使你的官位清廉如水，也难免碰到那些滑头狡猾的下属。
We all owe death a life.