Chomin NAKAE highly appreciated the personalities of Inoue and Senichi SHIRANE in Nakae's posthumous book 'Ichinen yuhan' (A Year and a Half) as follows, 'They are serious, and they are not lazy or impudent', although Nakane was their opponent.
中江兆民は遺著「一年有半」の中で井上と白根専一を「真面目で横着ではなく、ずうずうしいところのない」と評して敵対者ながらその人物を高く評価している。