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 greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
一次不公的司法判决比多次不法的行为为祸尤烈。不法行为弄脏的不过是水流，而不公的判决则将水源污染了。
The more you know yourself, the more patience you have for what you see in others.
In mathematics, the journey is as important as the destination.