经济史和经济发展的核心问题是解释政治和经济制度的演变，这些制度创造了一个诱导生产率提高的经济环境。

The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

（均平的状态下，水）保有内蕴，而外部毫无所动。

A computer program does what you tell it to do, not what you want it to do.

"The immune system is the key to fighting cancer."

"The immune system is like a double-edged sword; it can fight cancer but also needs to be controlled."