《隋书·列传·卷四十》
又因为主管天文、律度的都不称职，何妥又提出八件事向皇上奏道：其一，我听说善于识别人才的就是贤哲，一国之君要做到这点就更加困难。
又以掌天文律度，皆不称职，妥又上八事以谏：其一事曰：臣闻知人则哲，惟帝难之。
Because the officials in charge of astronomy and rhythms were also incompetent, He Duo made eight suggestions to the emperor: First, I have heard that people who are good at recognizing talents are virtuous people, and it is even more difficult for the monarchs of a country to do this.