要想消除海上的倭寇之患，先要消除人们心中的积弊

The past is always changing. Every time we remember something, we alter it slightly, until eventually, our memories become stories we tell ourselves.

现实不仅是能够被复制的东西，而且是总是已经被复制的东西。

Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics: