郑人是墨子的学生。他谨遵师诲,墨守成规,然而买鞋的事却惹出了大笑话。在众人的讥笑声中,郑人百思不得其解,是老师错了,还是自己有问题?最后他只好向自己的老师求解。墨子问明了原委,连连摇头。郑人问:“老师,我宁信度,不信足,有什么错吗?”墨子思索了片刻:“宁信度,不信足。这种说法并不为过,但是你真的这么认为吗?”郑人疑惑了:“当时我是这么认为的,但是现在……”“你当时就不是这么认为的。”墨子断然否定了他的说法,“宁信度,不信足,说明度比足更重要。如果你真的这么认为,那么你到集市上去的时候为什么带着足,却没有带度?你把度忘了,说明你并不重视度,如 Zheng is Mozi students. He would like to follow the teachings, stick to the rules, but to buy shoes but provoked a joke. In all the ridicule, Zheng puzzled, the teacher is wrong, or have their own problems? Finally, he had to solve their own teachers. Mozi asked about the whole story, shook his head again and again. Zheng asked: ”Teacher, I rather trust, not trust, what’s wrong?“ Mozi pondered for a moment: ”This is not an excuse, but you really Do you think so? “” Zheng puzzled: “At that time I thought so, but now ...” “You did not think so at that time.” “Mozi flatly rejected his statement,” Ning If you really think so, why do you bring your foot to the market when you go there, but you do not carry it? You forget that you do not value it ,Such as