《三国志·吴书·王楼贺韦华传》
因而古代有志之士，伤悼年岁的流逝而担心功名未及建立，故此勉励振奋砥砺操守，早起晚睡，顾不上休息，经年累月苦下功夫，像宁越那样勤奋，董仲舒那样笃学，濡浸在道德仁义的深潭，居游于学问技艺的王国。
是以古之志士，悼年齿之流迈而惧名称之不立也，故逸精厉操，晨兴夜寐，不遑宁息，经之以岁月，累之以日力，若宁越之勤，董生之笃，渐渍德义之渊，栖迟道艺之域。
Therefore, in ancient times, ambitious people mourned the passing of the years and worried that they could not establish achievements, so they encouraged themselves to strengthen their conduct, getting up early and going to bed late, not resting, working hard for years. , Diligent like Ning Yue, study like Dong Zhongshu, pervade in the deep pool of morality and benevolence, and live in the kingdom of knowledge and skills.