QUESTION: What is the sense of knowing which sūtras were preached according to the Buddha’s own mind or not, and which sūtras are easy or difficult to understand and believe?

ANSWER: This doctrine proving the Lotus Sūtra to be the ultimate teaching of all sūtras is the lamp that shines in the darkness of the long night in the world of illusions through life and death, and it is the sharp sword that cuts off the root of spiritual ignorance.

Shokyō to Hokekyō to Nan’I no Koto, The Difficulty and Easiness in Understanding the Lotus Sūtra and Other Sūtras, Writings of Nichiren Shōnin, Doctrine 2, Page 283