心灵进化以满足实际需求。
"The mind evolves to meet practical demands."
所以,在收成好的年头,百姓就仁义善良；遇到荒年,那么百姓也会吝啬而凶恶。
The truth is, I don't know what I believe. I'm still trying to figure it out.
A good book is a book that changes you.
If you don’t drive your business, you will be driven out of business.
解释：话说得太甜蜜动听，说话者就必定别有用心。