Every nanometer advancement in manufacturing process represents the hard work of countless engineers.
All good books have one thing in common - they are truer than if they had really happened.
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。 
真相很少是纯粹的,也从来不简单。