《颜氏家训·勉学篇》
人生在世，应当有自己擅长的技能，农民则商议耕稼，商人则讨论货财，工匠则精造器用，懂技艺的人则考虑方法技术，武夫则练习骑马射箭，文士则研究议论经书。
人生在世，会当有业，农民则计量耕稼，商贾则讨论货贿，工巧则致精器用，伎艺则沉思法术，武夫则惯习弓马，文士则讲议经书。
One must have their own skills in life. Farmers discuss agriculture, businessmen talk about merchandise, craftsmen refine their tools, artisans consider methods and techniques, martial artists practice horse riding and archery, and scholars engage in scholarly discussions.