Rely on the Law and not upon persons

"But when debating these matters with followers of other schools, one should confine the discussion to matters dealing with general principles. Thus, for example, one should point out that if T’ien-t’ai’s Great Concentration and Insight were not based on the Lotus Sutra, then it should be summarily discarded. Why? Because the Great Teacher T’ien-t’ai himself stated emphatically, “That which accords with the sutras is to be written down and made available. But put no faith in anything that in word or meaning fails to do so.” The Great Teacher Dengyō said, “Depend upon the preachings of the Buddha, and do not put faith in traditions handed down orally.” The Treatise on the Great Perfection of Wisdom of Nāgārjuna says that one should rely on treatises that are faithful to the sutras, but not rely on those that distort the sutras. And Shakyamuni, the lord of teachings, said, “Rely on the Law and not upon persons.”