《资治通鉴·唐纪·唐纪三十》
玄宗即皇帝位以来，所任用的宰相中，姚崇善于调解各方面的关系，宋执法严厉，张嘉贞重视吏治，张说善于写文章，李元与杜暹能够节俭治国，韩休与张九龄个性直率，这些人都有所长。
上即位以来，所用之相，姚崇尚通，宋珪尚法，张嘉贞尚吏，张说尚文，李元纮、杜暹尚俭，韩休、张九龄尚直，各其所长也。
Since Xuanzong assumed the throne, among the prime ministers he appointed, Yao Chong is good at coordinating relationships from all sides, Song Zhifa strictly enforces the law, Zhang Jiazhen attaches great importance to official administration, Zhang Shuo is good at writing articles, Li Yuan and Du Xi can be frugal and govern the country, Han Xiu and Zhang Jiuling are straightforward, These people all have their strengths.