《贞观政要·卷四·尊敬师傅》
每当论起此事，李纲一脸正气，言语激昂，透露出一种刚正坚定的志向，太子每次都为之肃然起敬。
每吐论发言，皆辞色慷慨，有不可夺之志，太子未尝不耸然礼敬。
Whenever the Crown Prince mentioned this matter, Li Gang had a righteous expression and spoke passionately, and a firm and upright will could be felt from his words, and the Crown Prince was in awe of him every time.