Compared to Hinayāna Buddhism, all non-Buddhist schools in India are in error. Compared to the Lotus Sūtra, the correct way of Hinayāna Buddhism or the first four of the so-called “five flavors” and the first three of the Four Teachings are all evil and erroneous. The Lotus Sūtra alone is true and correct. The “perfect teaching” preached in pre-Lotus sūtras is called perfect but its perfection is only from a relative point of view. It is still inferior to the absolute exquisiteness of the Lotus Sūtra.

Kaimoku-shō, Open Your Eyes to the Lotus Teaching, Writings of Nichiren Shōnin, Doctrine 2, Page 98