Murasaki Shikibu denounced Sei Shonagon in "Murasaki Shikibu Diary" ("Murasaki Diary") as if she absolutely denied Sei Shonagon's personality and achievement, but Sei Shonagon never wrote about Murasaki Shikibu in "The Pillow Book," which suggests that the view mentioned above is correct.
紫式部が『紫式部日記』（『紫日記』）で清少納言の人格と業績を全否定するかの如き筆誅を加えているのに対し、清少納言が『枕草子』で紫式部評を残していない一方的な関係からもこの見方は支持される。