He advocated the attainment of Buddhahood during one's lifetime and regarded his interpretation of the Buddhist teachings the correct form of practice for the Latter Day of the Law mappō. One of his major treatises is the "Rissho Ankoku Ron" (On Establishing the Correct teaching for the Peace of the Land). The chanting of the Mantra "Namu Myōhō Renge Kyō" is to this day the central practice to almost all Nichiren Buddhist schools and organisations.