I have written doctrines important to me in this letter, so please read carefully and take the time to understand them well.
Have faith in the Great Mandala Gohonzon, the Most Venerable One in the entire world. Earnestly endeavor to strengthen your faith, so that you may be blessed with the protective powers of Śākyamuni Buddha, the Buddha of Many Treasures, and Buddhas in manifestation throughout the Universe. Strive to carry out the two ways of practice and learning. Without practice and learning Buddhism will cease to exist. Endeavor yourself and cause others to practice these two ways of practice and learning, which stem from faith. If possible, please spread even a word or phrase of the sūtra to others.
Namu Myōhō Renge Kyō, Namu Myōhō Renge Kyō.
Shohō Jisso-shō, Treatise on All Phenomena as Ultimate Reality, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 79-80