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.
Software is under a constant tension. Being symbolic it is arbitrarily perfectible; but also it is arbitrarily changeable.
写作是理解混乱的一种方式。
Do what you can, with what you have, where you are.
建筑必须具有包容性，它必须拥抱每个人。
