《贞观政要·卷二·论求谏》
唐太宗容貌威武严肃，百官中觐见的人，见到他都会紧张得举止失常不知所措。
太宗威容俨肃，百僚进见者，皆失其举措。
Tang Taizong had a stern and majestic appearance. Those who were introduced to him in the court would be nervous, acting abnormally and at a loss.