《资治通鉴·隋纪·隋纪二》
文帝因此对左右侍臣们说： 我对待高胜过自己的亲生儿子，即使不见他的面，他也好象常在我的眼前。
因谓侍臣曰： 我于高颎，胜于儿子，虽或不见，常似目前。
The Emperor thus said to his attendants on the left and right: I treated Gao as if he were my own son, and though I may not see him, he seemed always to be before my eyes.