In Nichiren’s understanding, during the ages of the True Dharma and the Semblance Dharma, people had been able to achieve buddhahood through provisional teachings such as nenbutsu or Zen because they had already formed a connection to the Lotus Sūtra by hearing it from Śākyamuni Buddha in previous lifetimes. But people born in the age of the Final Dharma have not yet formed such a connection and thus cannot benefit from the nenbutsu or other provisional teachings, no matter how earnestly they might practice them, just as one cannot reap a harvest from a field where seeds have never been sown. Now in the age of the Final Dharma, Nichiren taught, it is the daimoku, the essence of the Lotus Sūtra, that embodies the seed of buddhahood. “At this time,” he wrote, “Namu Myōhō-renge-kyō of the ‘Fathoming the Lifespan’ chapter, the heart of the origin teaching, should be planted for the first time as the seed [of buddhahood]” in the hearts of the benighted persons of the mappō era.