农民要致富，必须走产业化道路。

It is not from the benevolence of the butcher， the brewer， or the baker that we expect our dinner， but from their regard to their own interest.

自然界的所有效应只是少数不变定律的数学结果。

I've learned that you can't control everything, but you can control how you react to it.

抽象允许一种自由，而具象有时无法做到。