“The Lotus Sutra is the teaching of shakubuku, the refutation of the provisional doctrines.”

"In this age, the provisional teachings have turned into enemies of the true teaching. When the time is right to propagate the teaching of the one vehicle, the provisional teachings become enemies. When they are a source of confusion, they must be thoroughly refuted from the standpoint of the true teaching. Of the two types of practice, this is shakubuku, the practice of the Lotus Sutra. With good reason T’ient’ai stated, “The Lotus Sutra is the teaching of shakubuku, the refutation of the provisional doctrines.” -- On Practicing the Buddha's Teachings