Even after the Meiji Restoration, he kept advocating the necessity of spreading the Western learning; when the movement towards the establishment of the National Diet was spreading in Japan, he advocated an English-style constitution by keeping a distance from the movement.
維新後も洋学の普及を主唱、国会開設運動が全国に広がると、一定の距離を置きながら、英国流憲法論を唱えた。