History and Teachings of Nichiren Buddhism, p 67Of the many śrāvakas, Śāriputra is said to be the wisest. The Buddha tells Śāriputra that the wisdom of the Buddhas is something beyond his understanding. That means that for all the śrāvakas and the pratyekabuddhas, the wisdom of the Buddhas is also beyond their understanding. The wisdom of the Buddhas attains the reality of all things, which cannot be put into words. This is because at the beginning of Chapter Two the Buddha says of all things, their appearances as such, their natures as such, their entities as such, etc. He only says, “as such,” because the reality of all things can be attained only by the buddhas.
Although the Buddha says this, buddhas do not monopolize the wisdom of the Buddhas. As Śākyamuni Buddha says at the beginning of Chapter Two, to convey to others the wisdom of the buddhas, which cannot be expressed in words, he has taught many things by mixing words, metaphors, similes, and tales of origin and fate. On the other hand, he emphasizes strongly that the various teachings which comprise the so-called “gate” to the wisdom of the buddhas are extremely difficult to understand, and therefore, the gate is difficult to enter.