《资治通鉴·汉纪·汉纪九》
乘坐车辆，这是君子的位置；身背肩担，这是小人的事；《易经》的这句话，是说居于君子尊位而去做平民百姓的事，这样的人，一定会招来祸患。
乘车者，君子之位也；负担者，小人之事也。此言居君子之位而为庶人之行者，患祸必至也。
Riding in a vehicle is the position of a gentleman; carrying one's shoulders on one's back is the business of a villain; this sentence in the Book of Changes means that a person who is in the position of a gentleman and does the work of an ordinary person will definitely bring disaster to himself.