凡其为此物也,无不加用而为者,是故用财不费,民德不劳,其兴利多矣。
凡是圣人制造的这些东西,无一不是有益于实用才去做的,所以使用财物不浪费,民众能够不劳苦,他兴起的利益太多了。 
The best ideas often come from unexpected places.
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
 寻求灵魂最安宁的状态。
"I don't have to be human to understand the value of life."