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 challenge in model checking is not just to find errors, but to understand why they occur.
"The writer is a man who is always trying to capture the essence of life, the essence of the human condition, the essence of the world."