Mabuchi advocated that Shinto, or Kannagara no Michi (Shinto, way of Gods), was the main way of heaven, earth, and nature, as descended since ancient times, but it had become turbid due to Buddhism and Confucianism which were introduced later.
神道つまり惟神道が、もともと日本古代から伝わる純粋な天地自然の大道であったが、後から伝わった仏教と儒教によって混濁させられた。