More specifically, Nichiren argued for the validity of the Lotus Sutra, which captures the essence of nature, based on the fact that the philosophy of the Ezo people (northern Japanese natives), which was handed down to Japanese fishermen at the time, had the same theory of numbers as the teachings of the Lotus Sutra.
具体的には、当時の漁民に継承された蝦夷の哲学と法華経に秘められた数の奥義が一致することから、自然界の妙法を説いた法華経の正当性を説いたもの。