《贞观政要·卷六·论谦让》
做了天子，如果只认为自己尊贵崇高，不保持谦逊恭谨的态度，倘若自己有过失，谁还会冒犯尊颜向他提意见呢？
凡为天子，若惟自尊崇，不守谦恭者，在身倘有不是之事，谁肯犯颜谏奏？
If the emperor only thinks that he is noble and lofty, and does not maintain a modest and respectful attitude, if he makes a mistake, who will still offend his majesty and give him advice?