次要规则是那些规定主要规则的创建、修改和废止的规则。
The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.
【释义】:早晨能发现昨夜的错误,今日能悔改昨日的过失。  
The future of medicine lies in understanding the unseen—viruses, genes, and the invisible forces that shape health.
The only person you should try to be better than is the person you were yesterday.
耳朵是负责听的,听了之后再加以审察,这叫做聪明。
在科学中,唯一不变的就是变化。
最好的投资是押注消费者行为的变化。