Now in the Perfect Teaching, the practice leading an ordinary person to Buddhahood is divided into six levels, which is designated as the six stages of practice (rokusoku). The third of the six stages is kangyō-soku, which is defined by T’ien t’ai as the stage in which one’s actions and words are in complete agreement. Accordingly, those in the stages below it, namely those in the first stage (ri-soku) and the second stage (myōji-soku) believe in the True Teaching in name but are unable to practice it in reality. For instance, the books of the Three Emperors and Five Rulers in ancient China are read by numerous people, but not even one out of one thousand or ten thousand can govern the world or act as preached in them. Therefore, it is difficult to govern the world. Likewise, we can read the Lotus Sūtra aloud as written on the paper, but it is difficult to act according to what is preached in it.
Tenjū Kyōju Hōmon, Lightening the Karmic Retribution, Writings of Nichiren Shōnin, Followers I, Volume 6, Page 30