《贞观政要·卷四·教戒太子诸王》
登上帝位后，每逢商议事情如何处理的时候，有时还会出现疏漏，由于得到他人的谏诤，才有所醒悟。
及居帝位，每商量处置，或时有乖疏，得人谏诤，方始觉悟。
After I ascended to the throne, there were sometimes omissions whenever I discussed how things should be handled, but I came to my senses because of the advice I received from others.