The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.

The advantages found in history seem to be of three kinds， as they result either from the mere situation of the climate and country or from the form of government and of the character of the people， or from those finer principles and morals， which may be called the recommendations of philosophy.

每本书都是作者和读者之间的对话。

我创造的每一个角色都是我的一部分。

你的大脑就像一块肌肉，越用越强。

The greatest danger is not that we will lose our way, but that we will become content with where we are.