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.
如果人类不能在我有生之年登陆火星，我将会非常失望。
"To write is to embark on a journey into the unknown, where every word is a step into uncharted territory."
我的作品不是为所有人准备的，这没关系。
经验的直接内容是我们唯一可以知道的现实。
The mind is a dynamic system of processes.
