In "Chuyuki" (diary of FUJIWARA no Munetada), it was mentioned that 'politics are determined by his words' and he could be considered a politician representative of the insei (cloister government) period.
『中右記』には「天下の政、この人の言にあり」とまで述べられており、院政期を代表する政治家の一人と言える。