The Lotus Sūtra is incomparable to any other sūtras preached by Śākyamuni Buddha during His lifetime. As stated in it, it is the sūtra understood only by Buddhas. This means that all those between the bodhisattva of the highest stage and the unenlightened are unable to understand it. Therefore, it is stated in the Great Wisdom Discourse attributed to Bodhisattva Nāgārjuna of India: “Those below Buddhas can attain Buddhahood only through faith.”

Ueno-dono Haha-ama Gozen Gohenji, A Response to My Lady the Nun, Mother of Lord Ueno, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 178

After all, those with capacity to understand and have full faith in Buddhism who had the luck of listening to Śākyamuni Buddha preach the Lotus Sūtra in India must have accumulated a great deal of merit in their past lives. Moreover, they were fortunate to have been assisted and guided by the Lord Śākyamuni Buddha, the Buddha of Many Treasures, who had come to attest to the truth of Śākyamuni’s words, various Buddhas in manifestation who had come from all over the universe, numerous bodhisattvas who had sprung up from underground, and such distinguished disciples of Śākyamuni Buddha as Mañjuśrī and Maitreya. Nevertheless, there were some who were not converted to the Lotus Sūtra. This is the reason why those self-conceited, as many as 5,000, moved out when the Buddha was about to start preaching (chapter 2, “Expedients”), and why some men and gods were transferred to other worlds (chapter 11, “The Appearance of the Stupa of Treasures”). It was so even while Śākyamuni Buddha was alive. How much more difficult is it to believe in the Lotus Sūtra in the Ages of the True Dharma and Semblance Dharma after the death of Śākyamuni Buddha, not to say in the beginning of the Latter Age of Degeneration? If you could easily believe in the sūtra, it would mean that the sūtra is not the True Dharma.

Kanjin Honzon-shō, A Treatise Revealing the Spiritual Contemplation and the Most Verable One, Writings of Nichiren Shōnin, Doctrine 2, Page 134

The Lotus Sūtra is called “Zui-jii,” namely it expounds the true mind of the Buddha. Since the Buddha’s mind is so great, even if one does not understand the profound meaning of the sūtra, one can gain innumerable merits by just reading it. Just as a mugwort among hemp plants grows straight and a snake in a tube straightens itself, if one becomes friendly with good people, one’s mind, behavior, and words become naturally gentle. Likewise, the Buddha thinks that those who believe in the Lotus Sūtra become naturally virtuous.

Zui-jii Gosho, The Sūtra Preached in Accordance to [the Buddha’s] Own Mind, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 155

The Nirvana Sūtra declares, “Rely on the dharma, not on the man; rely on the wisdom, not on the knowledge.” “Rely on the dharma” in this passage means to rely on the eternal dharma preached in the Lotus-Nirvana sūtras. “Rely not on the man” means not to rely on those who do not believe in the Lotus-Nirvana sūtras. Those who do not have faith in the Lotus Sūtra, even Buddhas and bodhisattvas, are not “good friends” (reliable teachers) for us in the Latter Age, not to mention commentators, translators and teachers after the extinction of the Buddha who do not believe in the Lotus-Nirvana Sūtras. “Rely on the wisdom” means to rely on the wisdom of the Buddha. “Rely not on the knowledge” means not to rely on the opinions of bodhisattvas in the highest stage and below.

Shugo Kokka-ron, Treatise on Protecting the Nation, Writings of Nichiren Shōnin, Doctrine 1, Pages 59-60

QUESTION: You cannot burn anything by simply uttering the word, “fire,” repeatedly. Indeed, you have to use your hand in order to burn something. You cannot quench your thirst by just saying “water.” You need to use your mouth for drinking water. The same is true with the daimoku. I doubt it is possible to escape from the evil realms through the mere chanting of the daimoku, Namu Myōhō Renge Kyō. Isn’t it necessary to understand what the daimoku means and what it entails?

ANSWER: When the sinew of a lion is used as a string for a koto, the sound is so powerful that all the strings made from other threads will snap. And when hearing of the sourness of a pickled plum, saliva fills the mouth without eating it. Such mysterious things happen even in worldly affairs. How then can it be denied that something wonderful happens with the Lotus Sūtra? Even a parrot is said to have been reborn in the realm of heavenly beings just by repeating the name of the Four Noble Truths of the Hinayāna teaching. Moreover, a man who dedicated himself to the Three Treasures – the Buddha, Dharma, and Saṃgha – was able to escape the attack of a monster fish in the ocean. Imagine the wonders that would occur with the daimoku of the Lotus Sūtra, the essence of all the 80,000 teachings, and the eye of all the Buddhas. Do you still hold the belief that you cannot escape the four kinds of evil realms by just chanting the daimoku of the Lotus Sūtra?

Hokke Daimoku Shō, Treatise on the Daimoku of the Lotus Sūtra, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 36

QUESTION: How can anyone escape the three evil realms just by hearing the daimoku, the title of the Lotus Sūtra, without understanding its meaning?

ANSWER: It is due to the meritorious acts of past lives that anyone happens to be born in a land where the Lotus Sūtra is known, hears the title of the sūtra and has faith in it. Even though he is ignorant and wicked in this life, because of the meritorious acts in previous lives, he can believe in this sūtra upon hearing its name. As a result he will not fall into evil realms.

Shugo Kokka-ron, Treatise on Protecting the Nation, Writings of Nichiren Shōnin, Doctrine 1, Page 65

How does the mirror of the Lotus Sūtra reflect on those who put faith in the Lotus Sūtra during the Latter Age of Degeneration as stated in the sūtra? Śākyamuni Buddha unmistakably declares that they are the ones who made offering to ten trillion Buddhas in the past (in the “Teacher of the Dharma” chapter).

Concerned that ordinary people in the Latter Age of Degeneration might not believe in the words uttered by just one Buddha, the Buddha of Many Treasures in the Treasure Purity World to the east far away beyond many countries took the trouble of making a trip to this world in order to see Śākyamuni Buddha and testify that the Lotus Sūtra contains nothing but the truth.

Could there be any doubt unresolved after this? Nevertheless, perhaps because ordinary people in the Latter Age of Degeneration may not be wholly convinced, numerous Buddhas were summoned throughout the universe to stretch their long and wide tongues, which told nothing but the truth from incalculable kalpa (aeons) ago till today, upward high in the sky like Mt. Sumeru. This was indeed an event of great significance.

Therefore, if an ordinary person in the Latter Age of Degeneration believes in even one or two words of the Lotus Sūtra, it is equivalent to embracing the truth set forth by the tongues (dharmas) of Buddhas throughout the universe.

Hokke Shōmyō-shō, Treatise on the Testimony of the Lotus Sūtra, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 184-185

There are two ways of meditating on the doctrine of “3,000 existences contained in one thought.” One is the “theoretical” way, and the other is the “actual” way. Grand Masters T’ien-t’ai and Dengyō practiced the former. I, Nichiren, now practice the latter. As my method of practicing meditation is superior, difficulties befalling me are harder to bear. What T’ien-t’ai and Dengyō propagated was based on the doctrine of “3,000 existences contained in one thought” expounded in the theoretical section [of the Lotus Sūtra], while what I, Nichiren, propagate is based on the doctrine of “3,000 existences contained in one thought” in the essential section. The difference between the two is as great as the difference between heaven and earth. Remember this especially at the time of the last moment of life. Have an unwavering faith in the Lotus Sūtra and continue chanting the daimoku, which is the right way of meditation based on the “actual” doctrine of “3,000 existences contained in one thought. ”

Toki Nyūdō-dono Go-henji: Chibyō-shō, A Response to Lay Priest Lord Toki: Treatise on Healing Sickness, Writings of Nichiren Shōnin, Doctrine 2, Page 257

Śākyamuni Buddha declared that, although the scriptures preached during the first forty years or so are as numerous as sands of the Ganges River, they did not reveal the truth, which would be explained in the Lotus Sūtra during the following eight years. At the moment the Buddha of Many Treasures emerged from the earth and attested it all to the truth. Then various Buddhas in manifestation (funjin) came crowding together from various worlds in the universe attesting it to be true and rejoicing by touching the Brahma Heaven with their long, wide tongues. The meaning of these words in the Lotus Sūtra is shiningly clear – brighter than the sun in the blue sky and the full moon at midnight. Look up and put your faith in it. Prostrate yourself before it and think hard about it.

Kaimoku-shō, Open Your Eyes to the Lotus Teaching, Writings of Nichiren Shōnin, Doctrine 2, Page 34