Grand Master Miao-lê states in his Treatise of Five Hundred Questions: “If anyone does not know about the eternity of his father’s life span, he will go astray in the country his father governs. No matter how talented he may be, such a person cannot be valued as a child. Prior to the time of the Three Emperors in ancient China people, like birds and beasts, did not know who their fathers were.” Likewise, if we do not know the eternal life of our True Teacher, Lord Preacher Śākyamuni Buddha, we do not know our own father, namely we do not know this Sahā World, which is the Pure Land of our Lord Preacher Śākyamuni Buddha.

Ichidai Goji Keizu, Genealogical Chart of the Buddha’s Lifetime Teachings in Five Periods, Writings of Nichiren Shōnin, Doctrine 3, Page 249-250