The first and greatest mission of Sakyamuni in this world is to help the multitude to unfold and develop their Buddha-intellect, and cleanse and purify their nature. When they are once able to unfold this Buddha-intellect of theirs, they will perceive the real nature of this world of evils, that is, the glory of that eternal reality which underlies the world of outward sense. Hence, to proclaim the identity of the evil or phenomenal world with the glorious underlying reality, or noumenon; to point out the way to Buddhahood; to open the path of salvation; above all, to convince the people that one and all of them may become Buddhas, here and now. This is the mission of the sect of Nichiren.
Doctrines of Nichiren (1893)