teacher of the true cause ［本因妙の教主］ ( honnin-myō-no-kyōshu): In Nichiren’s teachings, the Buddha who expounds the fundamental Law, or the true cause, that enables all people to attain Buddhahood. In the “Life Span” (sixteenth) chapter of the Lotus Sutra, Shakyamuni reveals the true effect, or the Buddhahood that he attained numberless major world system dust particle kalpas ago. He does not, however, fully clarify the true cause of, i.e., the practice that led to, his enlightenment. Hence, he is called the teacher of the true effect. In contrast, Nichiren taught that Nam-myoho-renge-kyo is the Law implicit in the “Life Span” chapter and is the cause of enlightenment for all people. Because he clarified the true cause for attaining Buddhahood, he is called the teacher of the true cause, and his Buddhism, the Buddhism of the true cause, or the Buddhism of sowing that implants the seeds of enlightenment in the lives of those who practice it.