《北史·本记·卷十二》
匡救危难，则霸业可兴；化人易俗，则王道乃贵。
癸卯，班师。九月庚辰，上至东都，己丑，诏： 军国异容，文武殊用，匡危拯难，则霸德攸兴；化人成俗，则王道斯贵。
If you rescue the danger, then the cause of hegemony can prosper; if you teach people to change their customs, then the way of the king is valuable.