Shobogenzo Shoaku-Makusa 11: Right is Not a Theory in the Head.
Master Dogen is concluding his discussion of 'not doing wrong, doing right' by looking at this koan... Kyo-i asks, “What is the Great Intention of the Buddha-Dharma?” Dorin says, “Not to commit wrongs. To practice the many kinds of right.” Kyo-i says, “If it is so, even a child of three can express it!” Dorin says, “A child of three can speak the truth, but an old man of eighty cannot practice it.” Thus informed, Kyo-i makes at once a prostration of thanks, and then leaves. His commentary begins: Kyo-i, though descended from Haku Shogun, is truly a wizard of the verse who is rare through the ages. People call him one of the twenty-four [great] men of letters. He bears the name of Manjushri or bears the name of Maitreya. Nowhere do his poetical sentiments go unheard and no-one could fail to pay homage to his authority in the literary world. Master Dogen praises Kyo-i for his great reputation and his talent in writing, but he's going to open a can of whip-ass on him for his ...