[T]he major theme of the Buddha’s preaching in [Chapter 19] includes two points. The first is the Buddha’s encouragement to man to devote himself to his practice because if he practices the Lotus Sutra wholeheartedly he can improve both mentally and physically. The second is the Buddha’s admonition that because a true believer in the Lotus Sutra must fulfill the important duty of spreading the Buddha’s teachings, he should naturally possess the power to discern all things. That a person has not yet attained such a mental state is proof of the inadequacy of his personal practice. Therefore he must constantly examine himself so as not to lapse into complacency and conceit.