Though he did not leave written philosophical work, his idea were later transcribed by his disciples, namely Tomita Takayoshi, Fukuzumi Masae and Saitō Takayuki. Ninomiya combined three strands of traditional teachings Buddhism, Shintōism and Confucianism and transformed them into practical ethical principles which matured out of his experiences. He saw agriculture as the highest form of humanity because it was the cultivation of resources given by the Kami.