《贞观政要·卷四·尊敬师傅》
我恳请陛下教导太子遵循前人的足迹，稍微放弃一些不重要的事，以弘扬远大的志向，使师友切磋的情义和道理得以伸张。那么太子的美德就会更盛，宏图帝业将会更加宽广，普天之下的百姓，有谁会不庆幸信赖呢！
伏愿俯循前躅，稍抑下流，弘远大之规，展师友之义，则离徽克茂，帝图斯广，凡在黎元，孰不庆赖！
Most earnestly, I implore Your Imperial Majesty to instruct the Crown Prince to follow in the footsteps of his predecessors, to somewhat abandon those things which are not important, so as to spread abroad his far-reaching aspirations, and to enable the feelings of friendship and the pursuit of principle which exist between teacher and student to be put into practice. In this way, the Crown Prince will become even more virtuous, his grand plan for governing the empire will become even more expansive, and who among all the people beneath heaven will not celebrate and put their faith in this?