逻辑学研究不仅仅是关于形式系统，而是理解理性思维的基本结构。

形容创业的艰辛

The ideas of economists and political philosophers， both when they are right and when they are wrong， are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men， who believe themselves to be quite exempt from any intellectual influence， are usually the slaves of some defunct economist.

作家最伟大的工具不是笔，而是通过他人的眼睛看世界的能力。

The life of the law has not been logic; it has been experience.