法華玄論 6.24

6.24

答：凡夫但是信佛語名為知耳，此未足是證。羅漢破此無明即能決定知，異凡夫也。又佛種種方便度脫眾生，聞知以悟則為說知，聞不知以悟則為說不知。

Answer: An ordinary person merely believes the Buddha's words, which is called 'knowing'; this is not yet realization. When an arhat destroys this ignorance, he can know decisively, which differs from an ordinary person. Furthermore, the Buddha uses various skillful means to deliver sentient beings: if by hearing 'knowing' they awaken, he explains that they know; if by hearing 'not knowing' they awaken, he explains that they do not know.