《贞观政要·卷四·太子诸王定分》
贞观十六年，太宗对侍臣们说： 当今国家哪些事情最为迫切？请你们每个人对我说说。 
太宗深纳其言。贞观十六年，太宗谓侍臣曰： 当今国家何事最急？各为我言之。 
In the sixteenth year of Zhenguan, Taizong said to his courtiers, "What are the most urgent matters in the country today? Please tell me each of you.